Testing and practical experience have established the most suitable dimensions for common structural and mechanical parts.
测试和实践经验已经为常见的结构上和机械上的部件建立了大部分适宜的大小。
Testing and practical experience have established the most suitable dimensions for common structural and mechanical parts.
测试和实践经验已经为常见的结构上和机械上的部件建立了大部分适宜的大小。
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