The effects of casing diameter on acoustic log in cased-borehole at free pipe situation are investigated with finite element method (FEM).

用有限元方法研究了自由套管井中不同直径的套管对声波测井的影响。

youdao

In the planning and design of gravity water transfer system, the combined pattern of pressure free pipe and canal with pressured pipe line is sometimes adopted to carry out water transfer.

在重力输水系统的规划设计中，有时采用无压管渠与压力管道相结合的方式输水。

youdao

A free flow of water came from the pipe.

水从管道里通畅地流了出来。

youdao

The pipe companies instead are benefiting from declining capital needs, improving free cash flow, attractive return of capital.

FORBES: The Netflix Effect: Results From A Revealing Study in Canada

The real terrorist, Eric Robert Rudolph, who later admitted to planting the pipe bomb that killed two and injured 111 others, remained free until he was caught in 2003.

CNN: Why officials, media wait to declare bombing suspect