positive valve的例句大全

The pressure of the positive pressure cavity is maintained by an air compressor and a vacuum and regulated by the corresponding adjusting valve.

正负压腔的压力由空压机和真空泵维持并由相应的调节阀调节。

The simulations of instantaneous driving torque show that the instantaneous driving torque is changed between the positive and the negative and fluctuated highly at the angle of the valve plate(θ≤ 15 °), which result in the dead movement zone and the worse low-speed stability.

瞬时扭矩的仿真分析表明，在θ≤15°时，其瞬时驱动扭矩在正负值之间跳动，脉动率高，是其产生低速稳定性差、存在运动死区的主要原因。

in the present paper, the optimized design of the cylindrical helix compression spring used in the relief valve of the erect steam boiler is carried out by the dual method of the geometric programming with the positive term formula of constraint.

本文用约束正定式几何规划对偶法，对蒸煮用立式锅炉微启式安全阀上的圆柱形螺旋压缩弹簧进行了优化设计。

for positive displacement pumps a pressure relief by-pass line including a time-controlled valve with slow action is recommended.

对于容积泵，推荐带有缓动时间控制阀的泄压支管。

Its design features include a double check valve assembly to assure positive, dependable seating protection.

这种结构特点在于包括一个双止回阀总成,确保积极 、 可靠的密封保护.

The positive crankcase ventilation valve and gas caps with air-pollution control valves reduce volatile organic compound loss.

曲柄轴箱通风阀和配有废气帽的空气污染控制阀（使用）减少挥发性有机混合物释放有积极作用。

Conclusions The clinical features of drug addicts with IE are: fever, inertia, panting, coughing, cardiac souffle, positive of blood germiculture and pulmonary infection. Echocardiogram is important to diagnosing the infection of tricuspid valve.

结论静脉药瘾并发IE者临床特征为发热、咳嗽、气促，心脏杂音，血细菌培养阳性合并肺感染，超声心动图检查对右心感染有重要价值。

As for the control of the negative surge wave, quick opening regulating valves can be used, while the positive surge wave, low pressure relief valves can be used in pressure relieving besides sensitive regulating valve system, in order to reduce surge pressure.

对于故障性负水击波，可采用快速调节阀控制，而对于正水击波，除采用反应灵敏的调节系统外，还可采用低压泄压阀泄压，以降低水击幅度。