Low noise coax cables should be used between the test coupons and the Model 7158 CARDS to avoid noise currents.

在测试样板和7158型开关卡之间应该使用低噪声同轴电缆，以避免噪声电流。

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When there is no existing qualified WPS for a particular welding, the Production Dept. shall prepare test coupons for WPS qualification.

如果特定焊接操作，无经检定的焊接程序规范做指导，则生产部应准备附体试片，进行焊接程序规范检定。

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Earlier this week, Yahoo announced it would partner with Groupon and LivingSocial to test a locally-focused coupons and discounts service called Local Offers.

FORBES: Groupon Said To Spawn More Than 180 Clones In U.S. Already