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洗井
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洗井
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well washing
洗井
水井打成之后,需替换和清洗井内的泥浆、沉淀物,以及井壁泥皮和含水层孔隙内的堵塞物等,使砾料和靠近砾料含水层中的颗粒重新按其大小自然排列,以形成良好的人工过滤层,水流畅通并达到水清、砂净的作业。
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multivalued solution
multivalued transformation
multivalue logic
multivalue logic; many-valued logic; multiple-value logic
multivalue method
multivariable
multivariable analysis
multivariable calculus
multivariable cipher
multivariable control
multivariable decision model
multivariable finite element
multivariable frequncy domain method
multivariable function
multivariable system
multivariable systems
multi-variable technologies
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multivariate adaptive regression splines
multi-variate analysis
multivariate analysis
multivariate analysis of variance
multivariate attribute
multivariate binomial distribution
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