错排孔板型封头结构
staggered perforated plate header configuration
孔板型结构封头
perforated plate header configurations
原型结构构构成法
the formation of the fashion prototype
蝶阀密封结构
butterfly valve’s seal structure
阀控式密封结构
value-regulated sealed structure
开式翻车保护结构封闭装置
open rops enclosure arrangement
流道密封结构
flow path sealed structure
密封结构
sealing structure
seal structure
seal up structure
sealing construction
hermetically-sealed construction
leakproof structure
leak tight structure
Gas-and-water-tight construction
sealing mechanism
seal design
seal configuration
sealing structures
airproof structure
Sealed structure
seal’s structure
气动助推密封结构
Seal-propelled pneumatic structure
汽封结构
steam sealing constructure
gland structure
球阀密封结构
ball valve′s seal structure
三偏心密封结构
triple eccentric seat sealing system