This is done with a drytest meter calibrated for methane.
可采用为甲烷作出校准的干式检测仪来完成这一操作。
2
He weighed the pot, the dry soil and the tree at the start of his test.
在测试开始时,他称了罐子、干土和树木的重量。
3
It's no coincidence that the desert has been used by filmmakers as a stand-in for Mars, and by NASA to test instruments bound for the cold, dry planet.