A sand retention screen with large radius and high permeability near the wellbore can be formed by high liquid production and the large amount of sand.
管外高压充填防砂增液技术通过高液量和大砂量在近井地带形成大半径、高渗透的挡砂屏障；
Using the program chromatogram can be drawn in CRT screen and the screen displays retention time in every top peak.
运用此程序可在CRT屏幕上绘制色谱图，在各色谱峰峰顶自动打印保留时间。
Objective To screen a better method for the treatment of postpartum urine retention.
目的探讨治疗产后尿潴留的方法。
Function: Energy saving, Humidity controlling, Heat Retention Characteristics: LI-ES Screen was knitted by 4mm wide composite plastic strip with thin and transparent High-density Polyester yarn.
功能：节能，控制湿度，保温。特点：LI-ES幕布由4mm宽的复合塑料条经细而透明的高强聚酯纱线编织组成。
Function: Energy saving, Humidity controlling, Heat Retention Characteristics: LI-ES Screen was knitted by 4mm wide composite plastic strip with thin and transparent High-density Polyester yarn.
功能：节能，控制湿度，保温。特点：LI-ES幕布由4mm宽的复合塑料条经细而透明的高强聚酯纱线编织组成。
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