plate stem 平板艏材 ; 平板船首柱
fashion plate stem 弯板艏柱
plate welded stem 钢板焊接首柱
shaped plate stem 弯板首柱
stem chrome plate 杆部镀铬
steel plate stem 钢板首柱
height of stem guide plate 梗导向板高度
Loosen and remove the diaphragm lock nut and lock washer, pressure plate and diaphragm from the valve stem.
松开和拆卸隔膜锁紧螺母和锁紧垫圈，从阀杆上往下压阀盘和隔膜。
The plate keel to be connected firmly with stem and stern frame.
平板龙骨应与艏柱和艉框架牢固地连接。
Stem should be 400 series stainless steel, can not stem exposed to the butterfly plate fasteners.
阀杆应该是400系列不锈钢，不能将阀杆暴露在蝶板紧固件上。
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