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- constant head vessel 恒定液位器
- The method involves measurement of the volume of liquid, under constant head conditions. 这个方法，液体在恒定的压头下，测定液体的体积。
- AASHTO T215-70/ASTM D2434-74,Standard method of test for permeability of granular soils(constant head)[S]. 张鹏飞.;路面内部排水系统研究[D]
- The consolidation-permeability combined test was performed on Xiaoshan clay sample using GDS advanced consolidation testing system, including several stages of constant head test. 利用GDS高级固结仪对萧山黏土试样进行了固结渗透联合试验，设定了多级常水头渗透试验并整理出渗流速度、水力梯度等相关试验结果，分析了非达西渗流模型的土性参数。
- Based on the lab orthogonal tests, using self-manufactured constant head permeameter, the effect of gravel content, void ratio and particle shape on the coefficient of permeability of soil-rock-mixture was studied. 本文采用室内正交实验，利用自制的常水头渗透仪，研究了砾石含量、孔隙比和颗粒形状3个因素在不同水平下对土石混合体渗透系数的影响。
- According to current engineering hydrodynamics, there s positively constant head loss in Bernoulli s theorem for identical stream line in viscous fluid, which can later turn into heat and dissipate. 现行工程流体力学与水力学理论通常认为粘性流体元流伯努利方程中的水头损失项是恒正的,并且这部分损失的机械能转变为热而耗散掉了。
- His wife was a constant inspiration to him. 他的妻子经常鼓励他。
- constant head of water apparatus 恒水压装置
- She nestled her head on his shoulder. 她将头依偎在他的肩上。
- After take-off from the landing area within center of a10 meter/ yard box, from Stationary Hover, maintaining a constant heading, move the helicopter diagonally to a corner of the box, hold for five(5) seconds, then return to the center of the box. 由边长为10公尺的正方形中心点的降落区起飞后，保持机头朝固定的方向，由静止停悬开始，将直升机飞往正方形的一个角落，保持静止停悬5秒钟，然后再飞回正方形的中心点。
- Her constant complaining just sticks in my craw. 她那不断的诉苦真使我受不了。
- With the sprouting of blood vessels, we can clearly recognize dark-stained blood vessels including axial vein, dorsal aorta, intersomitic vessels, caudal vein, and head vessels at prim-15 stage. 随着血管系统的发生，该基因在背动脉、轴静脉、体节间血管等血管系统出现广泛的高表达。
- After take-off from the landing area within center of a 10 meter/yard box, from Stationary Hover, maintaining a constant heading, move the helicopter diagonally to a corner of the box, hold for five (5) seconds, then return to the center of the box. 由边长为10公尺的正方形中心点的降落区起飞后，保持机头朝固定的方向，由静止停悬开始，将直升机飞往正方形的一个角落，保持静止停悬5秒钟，然后再飞回正方形的中心点。
- The machinery requires constant maintenance. 这些机器需要经常保养维修。
- The deer lowered its head to drink from the pond. 鹿低下头去喝池塘里的水。
- He gave the little boy a clout on the head. 他在那小男孩的头部打了一下。
- I was infuriated by/with their constant criticism. 他们没完没了地批评把我给气坏了。
- I saw the small girl topple over and hit her head. 我看见那小女孩栽了一跤，碰着了头。
- A constant, variable, function name, or expression. 一种常数、变量、函数名或表达式。
- Head does not have deep-sea vessel throw bombs. 头上还不时有船丢深海炸弹。
