sand prevention

基本解釋

JC" intake is a high effective, grass-prevention, and sand drainablenew type structure."
JC型取水頭是一種高效、防草和除沙的新型取水頭。
Generally, it is not enough to take mechanical or chemical sand-prevention methods for those high sand production wells, resulting in replacing the sand-prevention tubings.
對(duì)于嚴(yán)重出砂地層的油水井，即使采取了機(jī)械或者化學(xué)防砂措施，也不能保證油水井的長(zhǎng)期穩(wěn)產(chǎn)，不得不提出防砂管柱進(jìn)行更換。
The agronomy approaches to sand-dust storm disasters reduction were suggested, and mechanism for sand-dust storm prevention under the ground of global climate change was discussed mainly.
在此基礎(chǔ)上提出了沙塵暴減災(zāi)的農(nóng)學(xué)途徑，著重探討了在全球氣候變化的大背景下以冬小麥和冬油菜為代表的冬作物北移措施和保護(hù)性耕作措施的防塵機(jī)理。

防砂
The results mesh the actual data of wells. The result of this paper will be very important in selecting a rational sand prevention technology.
研究結(jié)果對(duì)該油田采取合理的防砂工藝措施具有重要的指導(dǎo)意義。