To satisfy installation and watertight demands, this factory shall provide various supporting accessories, including clamp, cover (some series contain sealing ring) and plug-in pieces.
为了安装及密封防水需要，本厂提供各种配套附件，其中抱箍、封盖(有的品种含密封圈)以及插片。
The movable device mainly consists of the nut, bolt, lifting wedge, backseat, supporting seat of the clamp plate, spring and pressure plate and so on.
活动装置主要有螺母、螺栓、提升楔块、后座、座板支座、弹簧以及压板等组成。
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