Answer
A WORM-GEAR MECHANISM
蝸桿機構
WINDOW QUESTION · ANSWERBUILD CLUB
The question
WHICH GEAR MECHANISM GREATLY REDUCES SPEED SO THE MEASURING CAR MOVES SLOWLY AND STEADILY?
哪一種齒輪機構能大幅降低轉速，讓測量小車慢而穩定？
Why it works
IT GREATLY REDUCES AXLE SPEED FOR STEADY, PREDICTABLE MOTION
蝸桿大幅降低輪軸轉速，讓小車穩定、可預測地前進
See it in action · THE WORM-GEAR MEASURING CAR
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