服务搭建商注册:QQ:156951423 媒体合作:QQ:1651582991 展会网上营销:Tel:400-601-2468方阀（square valve）【空调配件】是【宁波日月制冷设备有限公司】主打的【机械及行业设备|阀门|截止阀】产品...
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方向阀 directional valve ; directional control valve ; direction valve
方向控制阀 [机] directional control valve ; The Directional Control Valves ; directional valve ; Directing-control valve
方钻杆阀 kelly valve
方钻杆安全阀 kelly safety valve
比例方向阀 Proportional Directional-flow valve
方向切换阀 DIRECTIONAL CONTROL VALVES
主方向阀 main directional valve
四路方向阀 four-way directional valve
中位关闭方向阀芯 closed center directional stem
而按照这一方法多极设置动态平衡阀设计概念是不对的。
According to this method of multi-polar set dynamic balancing valve design concept is wrong.
气流调节阀：气流调节扭与挡风板均为高密度PP材质，用304不锈钢方棒连接，手动调节外部阀门旋钮，控制气流量。
Damper: both gas flow regulating button and wind board are high grade PP material, connected with 304 stainless steel bar, manually adjust the outside valve knob, control air flow.
文章根据阀控铅酸蓄电池的工作原理，讨论了铅酸蓄电池故障产生的原因，并介绍了铅酸蓄电池的维护方。
In this paper, according to working principle of VRLA, we discuss the reason of VRLA trouble and introduce the method of maintaining.
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