... 转子轴 rotor shaft 精度等级 precision class 铁路机车 locomotive ...
基于103个网页-相关网页
... 普通级General class 精密级Precision class 代号Code ...
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economic precision class 经济精度等级
class of precision [机] 精度等级
class of-precision 精度等级
class b precision b级精度
precision of sub-millimeter class 亚毫米级精度
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