Using foam, a casting molding, construction safety, convenience, speed, no pollution.
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Using foam, a casting molding, construction safety, convenience, speed, no pollution.
采用现场发泡,一次浇注成型,施工安全、方便、速度快、无污染。
Using foam rubber 17-ketosteroid (17-KS) and 17-hydroxycorticosteroid (17-OHCS) were separated and collected in urine.
用聚氨脂海绵对人尿内17-酮类固醇(17-KS)和17-羟皮质类固醇(17-OHCS)进行分离和富集。
The principle of reaching balance drilling and under balanced drilling using foam mud in water well drilling in Karst formation was presented.
分析了岩溶地层水文水井施工中,泡沫实现平衡压力或欠平衡压力钻井的原理及影响泡沫钻井有效井眼压力的因素。
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