This course is an introduction to basic metal-cutting principles and their practical applications.

本课程介绍基本的金属切削原理及其实务应用。

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It is located in a valley sedimentary belt in the Sumater gold silver basic metal mineralization zone.

它位于苏门答腊金银溅金属成矿带的宽坦河流域的准平原化河谷堆积地带。

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ALLOY, a mixture of a basic metal and small amounts of other metals to change the properties of the basic metal.

合金，在金属中加人少量其他金属，而改变其性质的一种金属混合物。

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Well, we just got to see some prototypes of the device, including the basic CORE 2 band, its metal bracelet and swappable plastic face plate accessories, and learned a bit more about the device.

ENGADGET: BodyMedia CORE 2 armband and View patch health monitors hands-on

There are two basic ways to play gold: own the metal or own the miners.

FORBES: Stock Of The Week

The basic design--a long piece of metal, with a serrated blade, attached to a handle--didn't change much for several millennia.

FORBES: No. 10 The Saw