Complicated as a modern machine is, it is essentially a combination of simple machines.
现代机器虽复杂，但实质上不过是简单机械的组合。
The casting is one of modern machine manufacture industry foundation crafts.
铸造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.
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.
配重铁是现代机械制造工业的基础工艺之一。
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