dognovel Chapter 1: Let's start making progress today.
Chapter 1: Let's start making progress today.
People will eventually be trapped by things they cannot obtain in their youth, which will define their entire lives.
And eventually, a momentary glimpse of the situation will resolve a lifetime of troubles.
The present is the past of the future.
Now is the future of the past.
The future is the past of the future.
…………
"Old Lu, wake up, wake up! You're next!"
Lu Feng was jolted awake by a sudden shove on his shoulder, and he lifted his head from his crossed arms.
What comes into view is a blackboard covered with densely packed mechanical calculation formulas and gear diagrams.
On the podium, a middle-aged man with a Mediterranean hairstyle and gold-rimmed glasses was adjusting his glasses, scanning the students below with an unfriendly gaze.
Why does this place look so much like the University of Hong Kong?
Just a second ago, I was in the factory workshop, racking my brains over a malfunction of an imported machine tool. How did I end up back here the moment I opened my eyes?
Could I have been reborn?
"Lu Feng!" The voice on the podium suddenly rose, tinged with displeasure.
"You answer the next question."
Lu Feng was also startled awake by the sound, and he subconsciously looked at Zhang Wei beside him.
Which question?
Zhang Wei was hunched over, his face hidden behind a book, silently mouthing, "Seventeen, question seventeen!"
Lu Feng's bewilderment and Zhang Wei's subtle actions drew a burst of suppressed laughter from those around them.
The teacher on the podium, Li Hongde, known as the "Mechanical King of Hell," had a face as black as the bottom of a pot.
He pushed up his glasses: "What's wrong? Still not awake? Do you need me to read the question to you?"
"I'll give you thirty seconds. If you can't answer this, your participation grade for 'Principles of Mechanics' will be zero!"
This statement startled those around them.
Playing this hard?
What does a zero score in "Mechanical Yama" mean? It basically means you can prepare to retake the course.
Zhang Wei, sweating profusely, lowered his voice and said, "Old Lu, read it from the book! It's on page 87, the analysis of factors affecting gear transmission efficiency!"
Lu Feng took a deep breath, forcing himself to calm down, and turned his gaze to the textbook.
Question 17: Please briefly describe the main factors affecting the stability of the instantaneous transmission ratio of involute spur gear transmission, and analyze their impact on transmission accuracy.
The moment Lu Feng saw the question, his experience from over a decade of working in a factory dealing with all sorts of precision gears came flooding back to him.
Those theories that once gave him headaches, and the knowledge that had been repeatedly explored and verified in practice, had long been thoroughly mastered through countless tasks.
Amidst the jubilant and amused gazes of his classmates, Lu Feng slowly began to speak.
More than half of the thirty seconds had already passed.
At this point, Li Hongde had already prepared his words, ready to launch into criticism as soon as Lu Feng said no.
"There are three main factors that affect the stability of the instantaneous transmission ratio of gear transmission," Lu Feng said, his voice unusually calm and clear, instantly suppressing all the noise in the classroom.
"First, there are manufacturing and installation errors in the gears. This includes cumulative pitch error, tooth profile error, and base pitch deviation. Tooth profile error directly disrupts the conjugacy of the tooth profile, leading to instantaneous changes in the transmission ratio, resulting in impact and vibration."
His speech was neither too fast nor too slow, and his words were clear and logical, unlike someone who had just woken up from a dream.
A hint of surprise flashed across Li Hongde's face; it was somewhat beyond his expectations.
The surrounding classmates also quieted down, and their expressions, which were originally prepared to laugh at them, gradually turned into surprise.
Lu Feng continued without pausing, "Secondly, there's the elastic deformation of the gear teeth. Under load, the meshing gear teeth will undergo contact deformation and bending deformation, which will cause the actual meshing point to deviate from the theoretical position, thus causing fluctuations in the instantaneous transmission ratio."
"Thirdly, there is tooth surface wear. Long-term operation will cause tooth surface wear, changing the original involute tooth profile, which is the main reason for the long-term decline in transmission accuracy."
After he finished explaining these three points, he didn't sit down. Instead, he added, "Teacher, I believe that in addition to these three conventional factors, the change in the thickness of the lubricating oil film and the thermal deformation caused by the operating temperature are also important influencing factors that cannot be ignored in ultra-precision transmission."
This supplement goes far beyond the scope of the textbook.
The classroom fell silent; those who had been mocking each other were now looking at one another.
Li Hongde adjusted his glasses and carefully examined Lu Feng, his eyes filled with scrutiny and disbelief.
His analysis was clear and logical, especially the final supplement, which clearly showed that he had thought deeply about it and was not simply reciting from the book.
He had no choice but to swallow his prepared explanation.
"...Well said." After a long pause, Li Hongde finally managed to squeeze out a few words, his tone complicated.
How exactly does he manage to listen to lectures while sleeping?
"The analysis is spot on. Please sit down."
Lu Feng sat down seemingly calmly, as if he had only done a trivial matter.
But only he knew that the back of his shirt was already soaked with cold sweat.
Whispers immediately broke out among the crowd.
"Holy crap, that's awesome!?"
"Sleeping in class? What kind of incredible feat is that?"
"Zhang Wei must have written the answers in the book next to him, and he just read them aloud, right? Otherwise, how could that be possible?"
Zhang Wei nudged him excitedly with his elbow, lowering his voice to exclaim, "Old Lu, you're amazing! When did you get this good? I thought you were doomed!"
Lu Feng did not answer, but instead took out his cell phone from his cloth pocket, which clearly showed the date as September 26, 2012.
12 years? Wasn't that when I first started college?
In his previous life, he was a typical college student who was just coasting along, upholding the glorious tradition of "skipping required courses and always skipping elective courses," and wasting his four years of college life in a daze.
After graduation, because I studied mechanical engineering, a versatile major, it wasn't difficult to find a job, but the salary was meager and the career development opportunities were limited.
He joined a private company and started as a technician at the very bottom.
Those ten-plus years were arguably the darkest period of his life. He endured countless hardships and scornful looks before finally managing to grow from a novice into a capable technical backbone.
Even so, without an impressive academic background, outstanding research experience, or recommendation letters from top-notch mentors, his career ceiling was clearly visible.
When he watched helplessly as those young juniors who graduated from prestigious universities and held multiple patents easily climbed to the positions he dreamed of, he truly understood what it meant to "make one wrong step, and then make a series of wrong steps."
Regret, resentment, helplessness... these emotions had gnawed at his heart countless times in the dead of night.
What one cannot obtain in youth will ultimately trap one for life.
Unexpectedly, fate really gave him a second chance!
Lu Feng slowly clenched his fist, as if he wanted to crush all those unbearable memories of the past.
My eyes welled up with tears, and an unprecedented surge of excitement and determination welled up from the bottom of my heart.
Now that he's back, he's determined to make up for all the regrets of his past life!
He will reclaim all that wasted time!
He was determined to seize those missed opportunities!
Progress is essential!
In this life, he no longer wants to be an unknown, ordinary engineer who keeps hitting walls.
He wants to stand at the pinnacle of scientific research and see a different view!
Just as he was filled with emotion and made his vow, a voice rang in his mind.
[Trigger: Keyword: I desperately want to improve]
[The host's strong thirst for knowledge and determination to change their destiny have been detected, meeting the binding requirements.]
[The Research Summoning System is binding... 10%... 50%... 100%!]
[Binding successful! Welcome to the Scientific Research Summoning System. This system is dedicated to serving you and helping you reach the pinnacle of science!]
system?