Plastics cover, completely enclosed, without screws, requires no earth grounding.
全塑外壳，完全密封，无外加螺钉，无需接地线路。
Polystyrene foamed plastics and GR6 used to cover the surface of grain bulk for insulation heat were tested.
本试验选用聚苯乙烯泡沫塑料和GR6作为隔热材料进行粮面压盖隔热保冷试验。
It was considered that the main cause of plastics weathering was sun's rays, and that plastics packaging box should not be stored without any cover in outdoor.
认为太阳光是影响塑料老化的主要原因，塑料包装箱不宜在户外无遮避贮存。
The stainless cover is made from high-strength aluminum and engineering plastics.
不锈钢封面是由高强度铝和工程塑料。
The oil drum, the drum cover, the inflating pump, a main body of the spray gun and the liquid conveying pipe are made of plastics and a spray nozzle of the spray gun is made of metal materials.
油桶、桶盖、打气桶、喷枪的主体及液体输送管都是塑料制品，喷枪的喷嘴采用金属材料制造。
Non-pollution, The pump body is made of polyvinyl chloride (pvc)plastics, and the onter cover is of cold-rolled steel plate with backing finish.
无污染，本机箱体为聚氯乙稀塑料，外壳采用不锈钢和冷板静电喷塑壳两种。
Non-pollution, The pump body is made of polyvinyl chloride (pvc)plastics, and the onter cover is of cold-rolled steel plate with backing finish.
无污染，本机箱体为聚氯乙稀塑料，外壳采用不锈钢和冷板静电喷塑壳两种。
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