Cov Txiv Ntseej Ntawm Valve

Cov txiv ntoo ntim yog qhov tseem ceeb dua kev sib xyaw ua ke (suav nrog cov kua nyeem tau li qubCov Teeb TeeblossisGland FoobNyob ib ncig ntawm kev txav mus (piv txwv li, lub qhov muag hluav taws xob, plunger). Nws ua kom pom tseeb ib qho xau {- ua pov thawj foob thaum muaj kev zam txim, tiv thaiv cov kua dej khiav tawm hauv huab.

Cim npe nrov: Cov txiv ntoo ntawm valve, Suav hauv daim ntawv txiv ntoo ntawm cov chaw siv hluav taws xob, Hoobkas