机床是由不同零部件组成的复杂机械结构。
Machine tool is a complicated mechanical structure composed of many different parts.
该方法特别适用于大型复杂机械结构的优化设计计算。
This method is particularly suitable for optimization design of large and complex mechanical structures.
劣势：机械结构复杂；微型发动机在美国市场销路不好。
Cons: Mechanical complexity; tiny engines are a hard sell in the U.S. market.
劣势：机械结构复杂；微型发动机在美国市场销路不好。
Cons: Mechanical complexity; tiny engines are a hard sell in the U.S. market.
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