从源头上为现代机械设计要点。
现代机械已经摆脱了原始的生存的人。
Modern machinery has freed people from that primitive existence.
齿轮机构在现代机械中应用十分广泛。
物理模型是现代机械设计中常用的方法。
Physical model is one of the most useful methodology often applied in modern machine design.
铸造是现代机械制造工业的基础工艺之一。
The casting is one of modern machine manufacture industry foundation crafts.
配重铁是现代机械制造工业的基础工艺之一。
The counterweight iron is one of modern machine manufacture industry foundation crafts.
在现代机械设计中的分析和绘图方面，主要的使用工具是计算机。
Analysis and mapping in modem mechanical design, the main use of tools is a computer.
现代软件开发实际上与机械或电气设计非常类似。
The development of modern software is actually very similar to mechanical or electrical design.
现代机器虽复杂，但实质上不过是简单机械的组合。
Complicated as a modern machine is, it is essentially a combination of simple machines.
没有现代的机械，要建这样一座长城是非常困难的。
It was very difficult to build such a Great Wall without our modern machines.
没有现代的机械，要建这样一座长城是非常困难的。
It was very difficult to build such a Great Wall without our modern machines.
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