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.
“我建议大家退后，我要推动活塞了”，语声未落,乔治布什已扭转了钥匙，开动了这辆庞大的拖拉机。
Photoelastic stress analysis proves reliable line contact simulation of samples for gear style contact fatigue parts designed by Caterpillar Tractor Co. , USA.
用光弹性应力分析，论证了美国卡特皮勒拖拉机公司的齿轮类线接触疲劳试样具有可靠的线接触模拟性；
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.
笔者将在此基础上．推导出履带式拖拉机的车辙大小的理论公式及其沿疏松土地行走时的运动阻力系数。

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