压下

Definition: ratio of the partial pressure of water to its saturation vapor pressure at the same temperature.

定义：在相同温度下，水的分压与到达它的饱和蒸汽压的比率

Due to the modulation of the piezoelectricity, a hole well is formed.

表明在栅压和压电极化场的共同作用下，可以形成的空穴聚集。

The steps of Reduced Gradient optimal method is used on solving the Least Squares theory model. At some situation, some nodes pressure and supply of all water-supply sources are measured in Xi'ning (resistance parameter of all pipes are known). By using the pressure of the experiment and optimal measure points, the state simulation is done respectively to get all nodes' pressure.

利用简约梯度优化法求解给水管网状态估计的最小二乘数学模型，实测某一工况下西宁市配水管网部分节点水压H_0、各水源供水量分别用优化选择的测压点水压和按经验选择的测压点水压估计所有节点的水压，对西宁市配水管网进行了状态估计。

Various mechanisms have been suggested for the nature of root pressure.

在植物弱蒸腾情况下，木质部的水分处于正压状态，这种压力叫根压。

Pressure governor valve is the use of a spring-loaded power and pressure balance theory, when the spring-loaded pressure less than atmospheric pressure and the valves closed when the pressure is greater than the spring-loaded rubber tubing stretch when the bottom of compressed air diaphragm, diaphragmthe effort to promote diaphragm upward and left vavle seat blow the air flow of gas, this would piston shirking role in the pressure mobile, Selection will be emissions from valve seat, air compressors made by the then air into the gas valves and exhaust emissions is through the mouth into atmospheric

调压阀的原理是利用了弹簧力与压力相平衡的原理，当弹簧的压力小于气压的时候阀关闭，当压力大于弹簧的弹力时候橡胶调压膜片下方的压缩空气对膜片的作用力，推动膜片向上拱曲离开阀座而使空气流入气腔，此时卸荷活塞在气压作用下移动，将排放阀门推离阀座，于是由空气压缩机充入气腔的空气便通过排放阀和排气口排入大气空气压缩机空转。

Pressure governor valve is the use of a spring-loaded power and pressure balance theory, when the spring-loaded pressure less than atmospheric pressure and the valves closed when the pressure is greater than the spring-loaded rubber tubing stretch when the bottom of compressed air diaphragm, diaphragm the effort to promote diaphragm upward and left vavle seat blow the air flow of gas, this would piston shirking role in the pressure mobile, Selection will be emissions from valve seat, air compressors made by the then air into the gas valves and exhaust emissions is through the mouth into atmospheric air compressors idling.

调压阀的原理是利用了弹簧力与压力相平衡的原理，当弹簧的压力小于气压的时候阀关闭，当压力大于弹簧的弹力时候橡胶调压膜片下方的压缩空气对膜片的作用力，推动膜片向上拱曲离开阀座而使空气流入气腔，此时卸荷活塞在气压作用下移动，将排放阀门推离阀座，于是由空气压缩机充入气腔的空气便通过排放阀和排气口排入大气空气压缩机空转。

Some meaningful conclusions had been made: 1. In the test, a form of subsurface crack is relative to the sclerometer's shape, when the top of the sclerometer is sharper the crack is easier form.

在该划痕试验中，亚表面裂纹与压头本身的形状有关；当压头顶部较尖锐时，在划痕深度一定的条件下，更容易产生裂纹； 2。

Any product can't molding a same thickness. Usually the deeper section may sink mark . To prevent this defect it should set holding pressure, The injection speed of holding pressure step is slow but holding pressure setting within 25-80% depending on sink mark.

任何产品都不同程度的存在一个厚薄不一的问题，正常情况下，较厚的部分都可能存在一个收缩凹陷的现象，为了解决这种现象，就应应用到保压，保压一般来讲都应用较慢的射速，而压力的设置则应看缩水的情况如何，小到25%，大到80%都有可能。

Any product can't molding a same thickness. Usually the deeper section may sink mark . To prevent this defect it should set holding pressure, The injection speed of holding pressure step is slow but holding pressure settingwithin 25-80% depending on sink mark.

任何产品都不同程度的存在一个厚薄不一的问题，正常情况下，较厚的部分都可能存在一个收缩凹陷的现象，为了解决这种现象，就应应用到保压，保压一般来讲都应用较慢的射速，而压力的设置则应看缩水的情况如何，小到25%，大到80%都有可能。

Usually thedeeper section may sink mark . To prevent this defect it should set holdingpressure, The injection speed of holding pressure step is slow butwithin 40.C-60.C, If oil seal work on condition that high pressure anddamaged It's work time will be shorter, it can cause molding stable.

任何产品都不同程度的存在一个厚薄不一的问题，正常情况下，较厚的部分都可能存在一个收缩凹陷的现象，为了解决这种现象，就应应用到保压，保压一般来讲都应用较慢的射速，而压力的设置则应看缩水的情况如何，小到25%，大到80%都有可能。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。