Xrf
abbr. X-ray fluorescence X射线荧光
🗣️ 情景例句
Come in, Michelle,
请进 ，Michelle
Then the damage must be caused at somewhere along the line where the goods weren't handled properly.
那么残损一定是在运输途中的什么地方对货物处理不妥造成的。
It is bacteria that have generated the oxygen we breathe on earth.
正是细菌生产出我们在地球上呼吸的氧气。