IT7
IT7
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A kind of general program used in machining center to cut and measure high accurate hole above IT7 was introduced .
本文叙述了一种在加工中心上对高精度孔(尺寸精度IT7以上)进行试切、测量的通用程序。
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For instance if the story is about poverty , housing , social welfare , or aid to those in need , you will code it7 .
举个例子,如果故事与贫穷、住房、社会财富或者救济有需要的人这些议题相关,那么它的编码就是7。