Put simply, this involves regularly measuring the concentration of the gases emitted from the soil and trapped in a sealed box.
简单来说，这涉及定期测量从土壤排放的并留存在密封箱中的气体浓度。
A welder's kit contains electrode holder, welding torch, helmet shield, portable electrode heating box and temperature measuring pen.
一名焊工的成套工具包括焊钳、焊炬、面罩、手提式焊条加热箱和测温笔。
The sensitivity of the self-organized bridge using resistance box as arm resistance and the uncertainty of the measuring result are analysed. The selecting principles are given.
本文分析了用电阻箱作桥臂电阻自组电桥的灵敏度及测量结果不确定度，给出桥臂电阻的选择原则。
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