fluid pack the wellbore是什么意思

用法例句

The effect of liquid fertilizre in different formulation on cotton drip irrigation was studied through field experiments,the results indicates that the dry-matter accumuiation,yield and the plant recovery of nutrient were promoted by using acid liquid fertilizer of cotton drip irrigation dissolved in water.

对膜下滴灌棉花施用3种配方液体滴灌专用肥进行肥效试验研究,结果表明:随水施用液体滴灌专用肥可有效促进棉花干物质积累,增加产量,提高肥料利用率。