你必须准确地计量长度。

You must measure the length by rule and line.

《新英汉大辞典》

为保证计量准确，必须按照JJG1021-2007《电力互感器》和DL/T448-2000《电能计量装置技术管理规程》进行检验。

To ensure accurate measurement, must be in accordance with JJG1021-2007 "power transformer" and DL / T448-2000 "power metering device technical management procedures" for testing.

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任何一种成本计算制度都必须有效地解决成本计量与成本分配的问题，以保证成本信息的相关性和准确性。

Any kind of cost finding system all must in solve the cost measurement and the allocation of cost question effectively, guarantees the cost information the relevance and the accuracy.

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