普通螺纹量规（螺纹环规、螺纹塞规）适用于检测符合国家标准及国际标准的螺纹制件。
The common thread gauges including ring gauges and plug gauges are used to calibrate thread work pieces with GB and ISO standards.
分析了普通机床数控化改造中的成本构成及影响成本的各种因素，指出了取得合理成本的方法和判断标准。
This article analyzes the constitution of cost in transforming machine tools into NC machine tools and various factors affecting cost, and points out the way and criterion for getting rational cost.
在不同的时间段，测定存放于普通球胆及特制的锡箔袋内的一氧化碳标准气的浓度，来探讨其浓度值与贮存时间的关系。
In order to investigate the variation of the concentration of carbon monoxide with time, we analysed the concentration of carbon monoxide in tinfoil gas collecting bag and ordinary gas collecting bag.
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