片语
sleeve-valve tube grouting袖阀管灌浆法
clamp p sleeve antireverse valve夹套止逆阀
clamp sleeve antireverse valve夹套止逆阀
sleeve poppet valve提动套筒阀
sleeve e valve套阀
way clamp sleeve plug valve双向夹套柱塞阀
sleeve puppet valve跳动套筒阀
LITPneumatic sleeve adjusting valve德国力特
spacer sleeve of valve rocker气门摇臂隔套