gas jar造句

"gas jar"是什么意思

造句与例句手机版

We used to perform a simple experiment for our Year 9 pupils ( UK : 13-year-olds ) in which we took the lid off a gas jar of hydrogen sulphide in one corner of the laboratory, and got the pupils to note at what time they could detect the smell, and plot iso-smell ( ? ) contour lines.
It's difficult to see gas jar in a sentence. 用gas jar造句挺难的

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