着重考虑了作为气体微流量标准装置核心的恒压式气体微流量计的原理、结构、下限因素和不确定度等基本问题。
The principle, structure, measurement limit and analyze of uncertainty of the constant pressure gas flowmeter, which was the key component of gas flow standard apparatus, were considered emphatically.
一个关键的区别是，到成熟总是成熟的标准，票据或债券，因此产量计算考虑到这一点。
The one key difference is that notes or bonds that go to maturity always mature to par, so the yield is calculated with that in mind.
本单位设计的水流量综合标准装置，主要由标准金属量器组、标准流量计、供水系统、管路系统、控制台和换向器组成。
Composite water flow Calibration Facility that our unit designed, makes up of standard metal tank group, standard flow meter, water-supply system, pipeline system, control cabinet and diverter mainly.
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