换床单 change the sheets ; change the linen
钠沸石离子交换床 sodium-zeolite ion exchange bed
不需要换床单 Don't require changing bed sheet ; Do not need replacement linens
离子交换床 ion-exchange bed
换床间 Bed-changing area
需要换床单 need replacement linens ; Need to change the sheets
卧床患者更换床单法 change an occupied bed
更换床单被套 MAKING AN OCCUPIED BED
需要更换床上用品吗 need to replace bedding
如果你的床太硬或太软或有硬块，也或者你的床垫已经用超过10年，那么是时候换一张床了。
If it feels too hard, soft, lumpy, etc., or the mattress is older than 10 years, then it is time to upgrade.[19]
对底部加热的被液体浸透的多孔物料床中的沸腾换热进行了实验和理论分析。
Experimental and theoretical investigations on boiling heat transfer in liquid saturated porous bed heated from below are conducted.
对固定床中流体与换热管呈错流流动的传热进行了实验研究，并以二维传热模型进行模拟。
An experimental study was conducted on the cross-flow heat transfer in a fixed-bed, and simulated by a two-dimensional model.
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