If a coil has no metal core it has an air core.
如果线圈没有金属芯子，它就有一个空气芯子。
Just name a few: metal core, industrial metal, classic rock and melodic death metal.
我说一些吧：硬核金属、工业金属、经典摇滚、旋律死亡金属。
Effective measure solving the problem on decrease of rope is to use the steel wire rope with metal core.
解决钢丝绳直径减小的有效措施是使用钢芯钢丝绳。
Orb Optronix offers a variety of standard mount 1" metal core printed circuit boards for many popular high brightness LEDs on the market."
我们公司生产各种标准的LED电路板，用于市场上许多高亮度LED设备中。
A method for forming the leading edge portion using refractory metal core technology is described.
对使用耐热金属芯工艺制出该翼面部的方法予以说明。
A method for forming the leading edge portion using refractory metal core technology is described.
对使用耐热金属芯工艺制出该翼面部的方法予以说明。
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