在循环系统或产出流体系统内部的小体积流体，其密度通常高于主体流体，其作用是影响井的流动特性或生产特性。
A small volume of fluid, often of a higher density than the main body of fluid, within the circulating or production-fluid system that influences the flow or production characteristics of the well.
对电脑技术最大的、唯一的要求不是提高速度、扩大容量、延长记忆或减小体积，而是要提出更好的问题，更好地利用其答案。
The biggest single need in computer technology is not for increased speed, or enlarged capacity, or prolonged memory, or reduced size, but for better questions and better use of the answers.
对计算机技术最大的、唯一的要求不是提高速度、扩大容量、延长记忆或减小体积，而是要提出更好的问题，更好地利用其答案。
Thee biggest single need in computer technology is not for increased speed, or enlarged capacity, or prolonged memory, or reduced size, but for better questions and better use of the answers.
应用推荐