water-proof structure

基本解释

Compound structure of safety- increased type, with functions of water- proofing , dust-proofing inside is arranged button , indicator, Ammeter of explosion-proof types.
整体为复合型结构，外壳采用增安型结构，具有较强的防水、防尘能力，内装按钮、指示灯、电流表均为防爆元件。
Said invention utilizes plastic film or plastic board as the water-proof layer of root, while the plastic layer is mounted on the surface of root or in the one layer of multilayer structure of root.
本发明用塑料薄膜或塑料板作为房顶的防水层，塑料层位于房顶表层，或位于房顶多层结构中的其中一层。
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Adopt the sand-proof structure design for the whole water pump, bring down the damage to pump itself.
水泵整体采用抗沙性结构设计，降低了水井沙子对水泵的损坏程度。