Establishing the model of ditch digger incorporate forces.
建立了挖沟机整体受力模型。
The ditch digger put his hand on his face and said, "Take your shovel and hit my hand."
他把手放在他的脸上说： “用你的铁铣来打我的手。”
A ditch digger can work an hour of overtime for extra pay, and a piece worker earns more the more he or she produces.
一个挖沟的工人加班一小时可以拿到更多钱，计件工完成的件数越多，赚得越多。
Computing and analyzing the reliability of ditch digger under many loads, such as the pull, the drag of ocean current and the edaphic drag.
计算分析了挖沟机在受到牵引力、海流力、土壤阻力等多种载荷作用下的可靠性。
Computing and analyzing the reliability of ditch digger under many loads, such as the pull, the drag of ocean current and the edaphic drag.
计算分析了挖沟机在受到牵引力、海流力、土壤阻力等多种载荷作用下的可靠性。
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