caterpillar tractor

基本解释

I'm about to crank this sucker up.” With those words, George Bush turned the key of a large tractor at the Caterpillar factory in Peoria this week.
“我建議大家退後，我要推動活塞了”，語聲未落,喬治佈什已扭轉了鈅匙，開動了這輛龐大的拖拉機。
Photoelastic stress analysis proves reliable line contact simulation of samples for gear style contact fatigue parts designed by Caterpillar Tractor Co. , USA.
用光彈性應力分析，論証了美國卡特皮勒拖拉機公司的齒輪類線接觸疲勞試樣具有可靠的線接觸模擬性；
Based on the achievements obtained. the theoretic formula that determine the rut size of the caterpillar tractor and the friction drag coefficient of motion was deduced.
筆者將在此基礎上．推導出履帶式拖拉機的車轍大小的理論公式及其沿疏松土地行走時的運動阻力系數。

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