helium injection是什么意思 helium injection怎么读
helium injection的用法和样例
- Note that sonication was less effective than either helium or vacuum treatment.
注意超声比通氦或者真空处理的效果要差。 - In my laboratory, helium sparging is the degassing technique of choice because it is simple and effective.
在我们实验室，用的是通氦脱气方式，因为它简单又有效。
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