Plunger lift is an intermittent gas-lift method which using the plunger or piston as a solid interface between the expanding gas and the liquid slug helps prevent gas breaking through the slug and decreases liquid fallback.
為了有效的對柱塞舉升系統(tǒng)進行設計和操作管理,需要正確預測分析把握柱塞在上下行程中的動態(tài)和油套壓等參數的變化情況,本文通過對柱塞舉升單個周期內的舉升階段、續(xù)流階段和關井壓力恢復階段進行了動態(tài)模擬,所做的主要工作如下: (1) 考慮了摩阻損失和液體漏失(回落)損失的影響,建立了柱塞舉升和間歇舉升井的舉升效率模型,并利用實例進行了對比分析; (2) 在假設柱塞與油管間流體沿環(huán)空直線運動和做軸對稱運動基礎上,利用連續(xù)性方程和Navier-Stokes方程建立了柱塞上行程的液體漏失數學模型; (3) 將柱塞舉升的單個。
Passengers can not bring liquids in carry-on bags.
乘客不能在旅行包中攜帶液態(tài)物品。
The ban on liquids and gels in your carry-on bag is no longer.
不再禁止包攜帶易燃液體和膠體。
Cooling will reduce the capacity of a liquid for carrying material in solution.
冷卻會降低液體攜帶溶液中的物質的能力。
The parasites that cause malaria enter people's blood when they are bitten by the mosquitoes that carry the organisms.
當被攜帶病菌的蚊子叮咬時，寄生蟲進入人體的血液中。
The liquid moves up the sheet by capillary action. It carries the components of the mixture sample up along with it.
通過毛細管作用，液體攜帶著試樣混合物的成分沿著濾紙向上移動。
Such liquid fuel rockets as are now being used for space research have to carry their own apply of oxygen.
象現在用于宇宙研究的這類液態(tài)燃料火箭，必須自己攜帶氧氣。
Cause Analysis of Gypsum Slurry Carry-over by Flue Gas of 630MW Supercritical Power Units
630MW超臨界機組煙氣攜帶脫硫石膏漿液的原因分析
Research on hepatitis B virus markers in breast milk and saliva of hepatitis B virus carried mothers
乙肝病毒攜帶產婦乳汁、唾液乙肝病毒標志物檢測結果分析
The role of hand Disinfection-Solution on hand Disinfection in an Intensive Care Unit
免洗消毒液對ICU醫(yī)護人員手上攜帶細菌的消除作用
portable explosion-proof digital level gauge
便攜式防爆數字液位儀
a two-wheeled vehicle carrying artillery ammunition.
攜帶彈藥的雙輪工具。
portable ultrasonic thickness meter
攜帶式超聲波測厚儀
a small portable timepiece.
一種小的易攜帶的表。
the baggage and equipment carried by an army.
軍隊攜帶的行李盒設備。
We brought tea in a thermos flask.
我們用保溫瓶攜帶茶水。
You may carry your luggage on broad without charge.
您可免費攜帶行李上船。
Can I carry this one on to the plane with me?
我可以隨身攜帶這個嗎？?
sth. taken with one and eaten at will
隨身攜帶，隨手可吃