阀门

Demount valve positioner , calibrate control valve.

组卸阀门定位器，校验控制阀

Cemented carbides product: Cemented carbides saw, blade, tool, drill bit, mould, Spray nozzle, seal, muzzle, hammer, Roller, rock drill, Semi-finished materials, Indexing blade, stick materials, long thin slice, plate, denticle piece, Impact drill, Ball, wooden blade, Ramming Mould, Valve, Boat pan and other products.

硬质合金制品：硬质合金圆锯片、刀具、工具、钻头、模具、喷嘴、密封件、顶锤、轧辊、钎具、坯料、可转位刀片、棒材、长条薄片、板材、锯齿片、冲击钻片、球、木工刀头、拉拔冲压模体、阀门、舟皿、非标准耐腐耐磨结构件及各种非标硬质合金制品、其它深加工产品

On demand of control dependability and low resistance, so the study focuses on structure of valve.

对阀门的要求，一是控制可靠，二是阻力小，因此其结构是关注的重点。

It should be noted that valve opening makes no detectable sound.

应当指出的是，阀门开没有探测声音。

2" To 2" valves shall be constructed of dezincification resistant brass or bronze alloy.

通径DN15至DN50阀门的材质应该是抗失锌现象的黄铜或青铜。

Dezincification is normally associated with brass valves where the zinc content exceeds 15%.

脱锌现象通常发生在锌含量超过15%的黄铜阀门上。

De-alloying corrosion, known as "Dezincification," was effectively eradicated from valve products in the 1950's.

合金腐蚀，称为"脱锌现象"，在1950年代已经在阀门产品上有效根除。

2" To 2" valves shall be constructed of dezincification

通径DN15至DN50阀门的材质应该是抗失锌现象的黄铜或青铜。

Valves shall be manufactured from dezincification resistant brass or bronze rated 240 psi at 250 F.

阀门材质应该是抗失锌现象的黄铜或青铜，压力－温度等级为121℃，240psi。

De-alloying corrosion, known as "Dezincification," was effectively eradicated from valve products in the 1950s.

合金腐蚀，也就是所谓的"失锌现象"，在20世纪50年代已经从阀门产品中根除。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。