helium injection

• 通氦

helium injection的用法和样例：

例句

1. 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。
2. 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。