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- F PR is the ratio of the time needed for a CDG and a polymer solution of equal polymer concentration to flow out through a sand pack and expresses the relative strength of the CDG in porous media. 孔隙阻力因子FPR為相同聚合物濃度的CDG和HPAM溶液分別流過(guò)填砂濾層所需的時(shí)間之比 ,可代表CDG在多孔介質(zhì)中的相對強度。
- Using the sand pack model, the percolation features of low permeability cores with various clay minerals and different proportions of clays are studied under different fluid injection patterns. 通過(guò)室內填砂管滲流實(shí)驗,研究了不同粘土類(lèi)型、不同粘土比例的低滲透巖心在不同流體注入方式下的滲流特性,并根據實(shí)驗結果分析了其滲流機理。
- Oolite lime sand packs naturally with 40% porosity because the particles are essentially spheroids. 自然堆積的灰質(zhì)鮞粒砂具有40%25的孔隙度,因為其顆粒其本上都是球狀的。
- Invention and application of micro-hole sand packing screen pipe 微孔防砂篩管的研制與應用
- Let's pack up and spend a week in the countryside. 咱們收拾好東西到鄉下去過(guò)一個(gè)星期吧。
- Ouch! The sand is so hot! I can burn my feet. 哎喲!沙子這么燙!會(huì )燙傷腳的。
- Phillip is packing up his goods. 菲利普正包裝他的貨物。
- The sand blew into the food and made it gritty. 砂吹進(jìn)食物中,里邊盡是砂子。
- The children were playing in the sand pit. 孩子們在沙坑中玩耍。
- How would you pack the goods we have ordered? 我們訂購的這批貨,不知你們是怎么包裝的?
- He used to smoke a pack of cigarette a day. 他過(guò)去經(jīng)常一天抽一包香煙。
- The tractor has make deep furrow in the loose sand. 曳引機在松軟的沙土上留下了深深的車(chē)轍。
- We leave tomorrow but I haven't begun to pack yet! 我們明天動(dòng)身,但我現在還沒(méi)開(kāi)始收拾行李呢!
- The ship was nosing a way through the ice pack. 輪船小心地通過(guò)大塊浮冰。
- The sun blazed down on the sand. 陽(yáng)光強烈地曬在沙灘上。
- Our packing method shall be improved. 我們的包裝方法應加以改進(jìn)。
- His company was built on the sand. 他的公司根基不穩固。
- Don't forget to pack your toothbrush! 別忘了把牙刷放到箱子里去!
- The river has scour out a passage in the sand. 這條河在沙土中沖出一條水道。
- I'll be packing up my thing then. 那時(shí)候我在收拾行李。