A.≤10° B.≤15°~25° C.≥15°~25° D.≤10°~15°
A.螺桿帶孔和開口銷 B.螺紋間涂粘接劑 C.彈簧墊圈 D.梅花螺母及鎖緊墊
A.0.5%~1% B.1%~5% C.5%~10% D.1%~10%