Expansion sib koom
Expansion Joint tseem hu ua yeeb nkab expansion sib koom ua ke, expansion sib koom ua ke, compensator thiab expansion joint. Kev sib koom tes nthuav dav yog ib yam khoom tshiab rau kev sib txuas ntawm cov twj, li qub, cov kav dej thiab lwm yam khoom siv nrog cov kav dej. Nws txuas nrog tag nrho bolts los ua ...
saib kom meej