借助一些手语、像样的产品目录以及用于中国所有复杂侃价的方便工具——计算器，再加上够用的英语，几乎所有人都能用顺利交流。
Almost everyone spoke enough English to get by just fine with a bit of sign language, a decent product catalogue and that handy tool for all complicated haggling in China - the calculator.
本文介绍了0.01或0.02级交流电能表检定装置误差计算器的设计原理，并分析了其测量误差及其改善方法。
This paper introduces the design of error calculator in electrical energy meters testing equipment of 0.01 or 0.02 classes, and analyses the count error and its improvement methods.
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