有阀的

Mechanism of blasting effect is specified,and mechanism of directional breaking controlled blasting effect of cutting seam cartridge is analyzed and discussed and dynamic strain for dandification of rock is tested and analyzed.

分析了塑料单向阀的结构特点及工艺要求，介绍了塑料单向阀注射模的结构及工作过程，并重点介绍了该模具的切缝功能，对类似模具的设计有一定的参考作用。

Control valve flow characteristics are linear features, such as the percentage Needle Valves of properties and characteristics of three kinds of parabola.

调节阀的流量特性有线性特性，等百分比特性及抛物线特性三种。

Oxygen pressure reducing valve installation precautions:(1) according to different application requirements, there are many specifications of the oxygen valve.

氧气减压阀的安装使用的注意事项：(1)按使用要求的不同，氧气减压阀有许多规格。

Washing, cutting ring and eyes require board (disc valve pump valve is the plate with the tie bar and wear-resistant film from top to bottom) the gap is smaller, there is a large amount of water to be strictly sealed, so to clean the ball forward after the infiltration of water .

水洗，要求切割环和眼睛板(碟阀泵则是板阀与系杆和上下耐磨片)的间隙要小，需有大量的水，严格密封，做到清洗球后的水不向前渗透。

Today, in the foreign intelligent artificial leg, the executive mechanism which controls the bent and stretch"s movement of knuckle and the pendular movement of calf is a single air cylinder. In the air cylinder, there is a throttle, the cylinder"s damp can be adjusted by controlling the opening of the throttle valve, when the air cylinders damp changes, the pendular speed of calf will change too.

目前，在国外研制成功的智能人工腿中，控制膝关节屈伸运动及小腿摆动的执行机构是一个单级空压气缸，其内有一个针阀，通过调节针阀的开度可控制气缸阻尼，从而控制小腿摆动的速度。

Experimental studies were conducted to investigate the effects of driving parameters,such as driving voltage and negative demagnetizing pulse,on the dynamic response performance of a three-way solenoid valve in the common-rail fuel injection system.

结果表明：提高驱动电压可以有效地提高三通电磁阀的动态响应性能；在不同驱动电压下，对于同一正向励磁脉冲都有一个最优的反向消磁脉冲，这时三通电磁阀的动态响应特性最好；驱动电压越高，最佳消磁脉冲越小，最佳消磁脉冲变化越缓慢。

By use this simulation program, not only can research on the brake capability of F8 distribution valve, but also can improve the valve, economize the time of experiment, accelerate the design of new production, and has important significance for design the new brake system which adapt for speed-up, high-speed and heavy-haul train.

通过使用本仿真程序，不仅可以进行F8阀制动性能的研究，还可以将其应用到阀的改进设计中，节约了试验时间，加快了新产品的开发速度，对设计适用于提速、高速和重载列车的新型制动系统有很重要的现实意义。

Through a special experimental rig of testing flow characters of electronic expansion valve based on liquid ring method,some influence factors such as outlet pressure,inlet pressure,inlet subcooling,valve opening,inlet density and outlet quality to valve flow characteristics were tested...

结果表明：上述参数对电子膨胀阀的流量特性均有一定的影响，但各参数的影响程度不同；开度是改变质量流量的主要因素，并反映出阀的调节特性。

2 Surfacing materials and welding equipment selection According to the working conditions of valve, valve plate oriented shroud must ensure that sufficient high temperature strength, but also satisfy some wear resistance.

1.2堆焊材料和焊接设备的选择根据调节阀的工作条件，阀碟导向凸肩既要保证有足够高温强度，又要满足一定的耐磨性。

Replacement for items of Red Valve's manufacture will be made free of charge if proved to be defective within such year; but not claim for transportation, labor or consequential damages shall be allowed.

如果在一年内证明产品有缺陷，则美国红阀公司将免费更换有缺陷的产品或部件，但是不接受运输、人工或后续损失的索赔。

Cynanchum Lingtai apricot production in the average weight 65 grams, the brightly-colored fruit, juicy rich, sweet-sour taste, sweet from the nucleolus, when the late Qing Dynasty famous Shaanxi, Gansu provinces, the Qing imperial court Tongzhi tribute for years.

灵台生产的牛心杏平均单果重65克，果实色泽鲜艳，汁多味浓，甜酸适口，离核仁甜，清末时就驰名陕、甘两省，清同治年间曾为朝廷贡品。

Chenopodium album,Solanum nigrum, and Amaranthus retroflexus were very susceptible to the herbicides. Polygonum persicaria and Abutilon theophrasti were relatively less susceptible to the herbicides, and Lycopersicon esculentum was not susceptible to it. The relationship between reduction rates of weed biomass and PPM values of weed leaves 2,4, and 6 days after treatment was established.

供试的6种杂草对该混剂的敏感性存在显著差异：红心藜Chenopodium album、龙葵Solanum nigrum和反枝苋Amaranthus retroflexus对该混剂最敏感，ED90值分别为47.65、71.67和29.17g/hm2；春蓼Polygonum persicaria和苘麻Abutilon theophrasti敏感，ED90值分别为96.91、114.20g/hm2；而番茄不敏感。