In this paper, we proposed a theoretical method and results for calculating special contact resistance and contact impedance of base contact of a PNP type HBT.

给出了非合金接触情况下，PNP型HBT基极比接触电阻和接触阻抗的解析计算方法和结果。

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Ltd Electrical Alloy Company of which the main products involve tungsten-base contact material, integrated contact, silver-base contact material. SF6 breaker contact, copper-graphite contact etc.

其主导产品有：钨基触头材料、整体电触头、银基触头材料、SF 6断路器电触头、铜-石墨触头等产品。

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Make it a habit of trading contact information with everyone you meet, then touching base every so often.

试着与你遇见的每一个人去交换信息，并且时不时地保持着联系，并且养成习惯。

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So if you plan a business trip to New York, you can see your contact base around the city and, thus, perhaps set up more meetings.

FORBES: Magazine Article

The aircraft cabin is shielded to prevent handsets from making contact with base-stations on the ground.

ECONOMIST: REPORTS

Then instead of immediately asking for time, Reyes flashed a lot of movement with his arm and hand, reducing contact with the base to just the fingers at one point, as he tried to readjust himself and move his foot to the base.

FORBES: Reyes is Poster Boy for Mets Mediocrity