Racs
[医][=relative absorption cross section]相对吸收截面，相对吸收断面
🗣️ 情景例句
She has an eye for detail.
她有鉴别细节的眼力。
It does appear that way.
是的，看起来好象是这样的。
Once he had done this, he had been able to turn on the supply.
一旦他接上了接头，他就能够打开供气阀。