This power meter has various functions including accurate timing, interval management, power counting. Besides those, an infrared communication interface is provided as well.

该电能表有精确计时、分时管理、电量统计等功能，具有红外通信接口，可以通过手持红外抄录器对电能表进行数据读取、校准等操作。

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Since the torque is approximately proportional to the tpm ( turns per meter ), we may illustrate the formation of balanced and unbalanced yarns by counting the turns per meter.

既然扭转力和每米纱线所具有的转数（tpm）近似成正比，因此我们通过数出纱线每米的转数来说明平衡纱线和非平衡纱线的形成原理。

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The water meter is only added with a timing unit and a counting unit on the basis of the existing electronic water meter, and has the simple structure and is practical and convenient.

该水表仅需在现有电子水表基础上增加一个计时和计数单元，结构简单，实用方便。

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