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。
2
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。
3
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.