Radiosclerometer
[医] [X线]透度计, [X线]硬度计
🗣️ 情景例句
Ask him to join us for lunch.
请他来和我们一起吃午饭。
What are you reading?
你正在读什么？
The main school holidays are from mid-December till early February when the days are long and warm.
学校主要的假期从12月中旬起至第二年的2月初为止，这段时间白昼很长，气候也暖和。