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.
为了有效的对柱塞举升系统进行设计和操作管理,需要正确预测分析把握柱塞在上下行程中的动态和油套压等参数的变化情况,本文通过对柱塞举升单个周期内的举升阶段、续流阶段和关井压力恢复阶段进行了动态模拟,所做的主要工作如下: (1) 考虑了摩阻损失和液体漏失(回落)损失的影响,建立了柱塞举升和间歇举升井的举升效率模型,并利用实例进行了对比分析; (2) 在假设柱塞与油管间流体沿环空直线运动和做轴对称运动基础上,利用连续性方程和Navier-Stokes方程建立了柱塞上行程的液体漏失数学模型; (3) 将柱塞举升的单个。
Passengers can not bring liquids in carry-on bags.
乘客不能在旅行包中携带液态物品。
The ban on liquids and gels in your carry-on bag is no longer.
不再禁止包携带易燃液体和胶体。
Cooling will reduce the capacity of a liquid for carrying material in solution.
冷却会降低液体携带溶液中的物质的能力。
The parasites that cause malaria enter people's blood when they are bitten by the mosquitoes that carry the organisms.
当被携带病菌的蚊子叮咬时，寄生虫进入人体的血液中。
The liquid moves up the sheet by capillary action. It carries the components of the mixture sample up along with it.
通过毛细管作用，液体携带着试样混合物的成分沿着滤纸向上移动。
Such liquid fuel rockets as are now being used for space research have to carry their own apply of oxygen.
象现在用于宇宙研究的这类液态燃料火箭，必须自己携带氧气。
Cause Analysis of Gypsum Slurry Carry-over by Flue Gas of 630MW Supercritical Power Units
630MW超临界机组烟气携带脱硫石膏浆液的原因分析
Research on hepatitis B virus markers in breast milk and saliva of hepatitis B virus carried mothers
乙肝病毒携带产妇乳汁、唾液乙肝病毒标志物检测结果分析
The role of hand Disinfection-Solution on hand Disinfection in an Intensive Care Unit
免洗消毒液对ICU医护人员手上携带细菌的消除作用
portable explosion-proof digital level gauge
便携式防爆数字液位仪
a two-wheeled vehicle carrying artillery ammunition.
携带弹药的双轮工具。
portable ultrasonic thickness meter
携带式超声波测厚仪
a small portable timepiece.
一种小的易携带的表。
the baggage and equipment carried by an army.
军队携带的行李盒设备。
We brought tea in a thermos flask.
我们用保温瓶携带茶水。
You may carry your luggage on broad without charge.
您可免费携带行李上船。
Can I carry this one on to the plane with me?
我可以随身携带这个吗？?
sth. taken with one and eaten at will
随身携带，随手可吃