In the mineral table of hardness, it has a rating of 8, which means that a knife cannot cut it, and that topaz will scratch quartz.
在矿石硬度表上，它的硬度为8，这表明刀子不能割开它而它可在石英上划痕。
The hotel sign on the semi-cut trigger the appropriate position in the cardboard and then covered with a cut, so as not to scratch the plating surface of the hotel sign.
把酒店标牌半成品放在剪扳机的合适位置， 外地标识牌设计在上面盖一张纸板后再剪切，以免把酒店标牌表面的电镀划伤。
The semi - finished products on the appropriate position of the trigger, in the above cover a piece of cardboard and then cut, to avoid the appearance of the plating scratch marks.
把标牌半成品放在剪扳机的适宜方位，在上面盖一张纸板后再剪切，避免把标牌外表的电镀划伤。
The hotel sign on the semi-cut trigger the appropriate position in the cardboard and then covered with a cut, so as not to scratch the plating surface of the hotel sign.
把酒店标牌半成品放在剪扳机的合适位置，在上面盖一张纸板后再剪切，以免把酒店标牌表面的电镀划伤。
One of the things you don't think about when setting about to design a production engine from scratch-a laser cut gasket set.
其中一件事你不想想，当定约，以设计一个生产发动机从零开始-激光切割垫片一套。
One of the things you don't think about when setting about to design a production engine from scratch-a laser cut gasket set.
其中一件事你不想想，当定约，以设计一个生产发动机从零开始-激光切割垫片一套。
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