90 Luj Tshib
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Style 90DE 90 ° Luj Tshib
Peb (CNG) muab cov qauv 90DE 90 ° Luj Tshib. Lawv tau siv los txuas Standpipe los tswj hwm, faib khoom, lossis txhawb cov raj xa dej hauv qhov sib txawv lossis cov lus qhia. Los ntawm kev sib txuas sib txuas, lub sijhawm ua haujlwm tau txuag ntau nrog kev teeb tsa nrawm thiab kho tau yooj yim. Peb muab cov yeeb nkab sib dhos sib dhos rau kev tua hluav taws.
