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Bed cet exam date 2025: 接下来让我们看下on the bed、in the

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接下来让我们看下on the bed、in the bed和in bed的用法区别: 1.位置:on the bed表示在床上的表面,in the bed表示在床内或被褥中,in bed表示躺在床上 例子: - He sat on the bed and watched TV. (他坐在床上看电视。) - She found the lost necklace in the bed. (她在床里找到了丢失的项链。) - I caught a cold and had to stay in bed. (我感冒了,只能躺在床上休息。) Go to bed obviously means go to sleep (it doesn't even necessarily have to happen on a bed !) and go to the bed just means go over to the bed and sit on it. It wouldn't be said that often. BED(生物等效剂量) | BED的全称是Biological Effective Dose,中文名是生物效应剂量,也称作生物等效剂量(Biological Equvalent Dose),从名字可以看出,这个剂量值与放射生物学效应(损伤、修复等)有关。 … eqd2和bed区别EQD2和BED是放射治疗计算中常用的两种生物学剂量等效模型。 EQD2是等效周剂量(Equivalent Dose in 2-Gy fractions)的简称,BED是生物学有效剂量(Biologically Effective Dose)的简称。

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