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- weak bedding surface 软弱层面
- When erosion ceased, the bed surface was observed to be covered by a thin layer of sticky material. 当冲刷停止时可以观察到床面上覆盖着一薄层粘着物质。
- Instruct the client to assist in moving by using the trapeze bar if available or by pushing on the bed surface. 让病人利用可用的横杆或按在床面上帮助移动。
- Open the exit to make the eluent flow out till the bed surface meets the liquid surface, shut off the exit. 3.;加样品：打开螺旋夹使柱面上的洗脱液流出，直至床面与液面刚好平齐为止，关闭下端出口。
- Before turns the soil, when hypha growth to ground or bed surface 2/3 , it must be to promptly turn the soil. 覆土前，菌丝生长离地面或床面三分之二时，要及时覆土。
- The bed surface is welded by the high quality cold rolled steel whose surface is smooth,flat,durable and fadeless. 床面采用优质方管焊接喷塑而成，表面光滑平整，抗磨不退色。
- Its main work includes the Yellow River sediment cross-section tests, river bed surface quality sampling and particle size distribution analysis and so on. 其主要工作内容包括黄河河道断面淤积测验，河道表层河床质取样及颗粒级配分析等工作。
- The emission of gas species from bed surface is also satisfyingly simulated and O2, CO2 concentration in flue gas agree with the experimental data better than CO. 模拟计算得出床层表面产生气的体变化趋势能反映垃圾燃烧进程, O2和CO2模拟结果与实验值吻合较CO要好。
- The spirit is willing but the flesh is weak. 心有余而力不足。
- The bed surface is divided to back board and seat board.The dentiform bar lifting framework is operated by hand wheel.Back board can be fold up and down to suit various body positions. 床面分背板，座板，通过手轮操作齿箱条升降结构，背板可以上折、下折，以适合各种体位的需要。
- The preliminary result indicates that Reynolds number and Froude number of overland flow tend to increase as slope gradient increases in the condition of same bed surface and flow discharge. 初步得出以下结论：(1)在床面和流量相同条件下，坡面流雷诺数和佛汝德数均随坡度的增加而增大。
- After a week in bed with flu I felt as weak as a kitten. 患流感在床上躺了一周，我觉得身体很虚弱。
- The shock make me go all weak at the knee. 这件事把我吓得两腿发软。
- You must be weak in the head if you believe that. 你相信那件事可就太傻了。
- He cannot run because he has a weak heart. 他有心脏病，不能跑。
- A fearful person is a weak person. 怕这怕那的人是软弱的人。
- The shock made me go all weak at the knees. 这件事把我吓得两腿发软。
- The brook warbled over its rocky bed. 小溪潺潺流过多石的河床。
- His weak chest was a legacy of a childhood illness. 他那瘦弱的胸脯是儿时患病的后遗症。
- In a weak moment, I agreed to pay for her holiday. 我一时心软同意了支付她度假的费用。
