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。
The high temperature foamed ceramic with water all proof and thermal insulation has been trial - produced by using local porcelain sand and cullet.
利用地方瓷砂原料和废碎玻璃试制了具有防水、保温功能的高温发泡陶瓷。
The green sand mold with even density and proof of the impact of liquid metal is one of the critical factors in the production of quality casting.
紧实度均匀、能抵抗金属液体冲击的合格砂型是保证铸件质量的关键因素之一。
The sand test and model land test were the proof of the stimulation of litter on the growth of ash.
室内砂培试验证明、落叶松的枯枝落叶能促进水曲柳的生长，模拟样地试验验证了室内砂培试验的结果。
Sand culture trial and rain-proof mini-plot rial both proved phosphorous had remarkable effect on improving plant's photosynthesis efficiency.
砂培和防雨微区试验都证明磷对提高作物光合效率有显著作用。
My factory productions quartz sand mainly uses in the glass, fire-proof material, smelting ferrosilicon, flux, ceramics, abrasive substance, casting.
我厂生产的石英砂主要用于玻璃，耐火材料，冶炼硅铁，冶金熔剂。
My factory productions quartz sand mainly uses in the glass, fire-proof material, smelting ferrosilicon, flux, ceramics, abrasive substance, casting.
我厂生产的石英砂主要用于玻璃，耐火材料，冶炼硅铁，冶金熔剂。
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