2纤单向通道保护环
unidirectional path switched ring of SDH
HDPE单向拉伸格栅
tensiled high density polyethylene
变精度单向变异S-粗集
variable precision one direction variation S-rough
变矩器单向离合器部件
torque converter one-way clutch component
变矩器防倒流单向阀
converter backflow check valve
操纵的先导单向阀
pilot operated check valve
铲刀侧移止动单向阀
blade sideshift lock check valve
铲刀倾斜单向安全阀
blade tip check and relief valve
铲刀倾斜止动单向阀
blade tip lock check valve
铲刀升降单向安全阀
blade lift check and relief valve
铲刀升降止动单向阀
blade lift lock check valve