This feature is implemented using the popen system call, which allows one process to open a pipe to another process, either for output or input. In this case we open a pipe to the command.
这一特性是用popen系统调用实现的，该系统调用允许一个进程打开到另一个进程的管道，将管道用于输出或输入。
Check any pipes that run close to outside walls. Put some fiberglass insulation or rockwool between the pipe and the wall to help keep the cold away from the pipe.
检查靠近外墙的所有管路，并在管路和墙体之间包覆玻璃钢保温层或石棉，以确保低温远离管路。
To do this, BP has been replumbing and rewiring the blowout preventer, paying particular attention to its choke pipe and the kill pipe.
在此以前，英石油已经给井喷防护器重新布管布线，其中重要的阻流管（chokepipe）和压井管（kill pipe）更是被小心铺设。
Other designs have a circular cutout in the middle that corresponds to the diameter of the pipe in the hole to seal the well when pipe is in the hole.
其它类型的设计则在中间有一个圆形的剪切块，使其适合井眼内管柱的直径以便当管柱位于井眼内时能够密封井眼。
First of all the most important point: if the gas pipeline inner fire, immediately closed all into the hole, radiation tube and sealing pipe, and in general to pipe of steam to extinguish fire.
首先最重要的一点：如果煤气管道内着火，应立即封闭所有入孔、放散管、采封管，并向管道内通大量蒸汽灭火。
In order to write logs to a pipe, simply replace the filename with the pipe character "|", followed by the name of the executable which should accept log entries on its standard input.
为了写日志给一个管道，简单地用管道符|替换文件名，跟随可执行程序名字，这个程序应该在它的标准输入上接受日志项。
For example, connecting a steel pipe to a copper pipe or to a copper electrical grounding system results in corrosion of the steel.
例如，把钢管和铜管相连或钢管和铜的接地系统相连就会导致钢的腐蚀。
This paper deals with the relationship between the fault movement and the pipe line deformation and presents some opinions as to how to design a buried oil and gas pipe line through fault area.
本文讨论了断层运动和管道变形的关系，从而对过断层区的埋地管道的设计提出了几点意见。
According to he calculation and economy analyses of heating pipe, this paper suggests that heating system design should consider the pipe heat dissipating capacity to reduce engineering cost.
通过对采暖管道热量的计算和经济分析，建议在采暖系统设计时考虑管道的散热量，以降低工程造价。
When new pipe is connected to old rusty pipe, generally, the new pipe is anodic to the old pipe.
当新管子和生锈旧管子相连时，新管子相对于旧管子常为阳极。
Pipe friction is the resistance to flow caused by the pipe. As a general principle, it is better to use the largest practical pipe size to avoid losses in pump performance.
管道摩擦力是指由管道引起的流动阻力，作为一个常用原则，最好是使用最大的实用的管道尺寸以避免在水泵性能方面的损失。
Adjustable pipe supports made from A-36 High Carbon steel designed to support heavy to light wall runs of pipe. Mainly used in the construction industry.
可调管道支撑由A - 36高碳钢制成，用于支撑重型到轻质各种管路。该类产品主要用于建筑行业。
Passing ball cleaning pipe technique is a very effective method to clean up the impurity, wax and filthy and to exclude the existing liquid in oil gas transmission pipe.
通清管技术在油气集输中是一种常用的用来清除管道内杂质、蜡、垢以及排空管道内存液的有效办法。
The linear loss of sewage flowing in pipe is approximately equal to that of water pipe flow. So it's feasible to accept the method in use at present.
污水在管道内流动的沿程损失与清水流动时近乎相等，所以目前在管道水力计算中所采用的处理方法是可行的。
The spiral flow in the horizontal pipe can generate the spiral flow to transport sediment according to the way of equipping the guide blade in the middle of the pipe.
前两种排沙方式已经广泛应用于工程实践中，平轴螺旋管流排沙是近年提出的一种节能、高效的输沙方式，目前还处于试验研究阶段。
Adopt measure to prevent the heat transmit between intake pipe and exhaust pipe, lower the intake air temperature to increase volumetric efficiency.
采取进、排气管隔热措施，降低进气温度来提高进气充量。
A fault movement can be resolved into an axial component (parallel to the pipe axis), a lateral component (perpendicular to the pipe axis) in the horizontal plane and a vertical component.
断层运动可分解为轴向分量(与管轴平行)、水平面的侧向分量(与管轴垂直)和竖直分量。
This article introduced weld reinforcement importance to SSAW pipe, effect of weld reinforcement to weld mechanical property and to SSAW pipe anti-corrosion.
介绍了螺旋埋弧焊管焊缝余高的重要性、焊缝余高对焊缝力学性能的影响以及余高对螺旋埋弧焊管防腐的影响。
The inlet of the grilling pipe is connected to an upper portion of the tapered hole , and the air discharging pipe is connected to a lower end of the tapered hole .
烧烤管的入口连接到锥形孔的上部，并且排气管连接到锥形孔的下端。
This universal mill stand can be used not only in a new welded steel pipe mill to be designed but also in the reform to old welded steel pipe mill.
这种机架不仅可以用于新设计的焊管机组中，而且还可以用于对现有焊管机组的改造。
The flow rate distributor distributes fluids in a main pipe to all holes, or converges fluids from all holes to a main pipe.
流量分配管是将主管流体分配到各个孔，或者是流体由各孔汇入主管的流动过程。
It is pointed out that the steel pipe consumption in proportion to steel output and the reasonable consumption proportion of welded steel pipe to seamless steel pipe.
指出了钢管消费量占钢材产量的比例及焊管和无缝管的合理消费比例。
While Halliburton had finished cementing the casing area outside the pipe, it had not yet been able to set a cement plug to block the pipe before the explosion.
尽管哈里·伯顿公司已经结束了管道外部套管区域的水泥浇铸，却未能在爆炸发生前设置一个水泥封井装置把管道封起来。
These principles are applicable not only to the gas- gas heat pipe heat exchangers but also to the gas-liquid head pipe heat exchangers.
这些原则不但适用于气-气热管换热器，而且也适用于气-液热管换热器。
Pipe clamps similar to this illustrated in the figure were developed that utilized round, square, or rectangular pieces of steel curved to fit the outside of the pipe.
如图所示的管卡，它使用圆的、方的或长方形钢板，使其弯曲与管子外园贴合。
Due to space limitations, offshore pipe racks tend to be narrower and routinely contain many layers of pipe.
由于空间的限制，海洋钻井时的管架一般较窄，并通常包括了很多层。
Welding seam should be numbered according to pipeline medium set, in principle, main pipe prior to branch pipe.
焊缝编号应根据管线介质流向进行编号，原则上应先主管后支管。
It is forbidden to lift pipe within 5 meters closed to the joint after insulation joint is connected to the pipe.
绝缘接头与管线连接后，不许在接头5米内起吊管线。
In order to prevent damage to the pump must pump discharge pipe into the suction pipe installed between the safety valve.
为了防止泵的损坏，必须在泵的排出管到吸入管之间安装安全阀。
Whether to change the pump outlet pipe structure or to change the pump intake pipe structure, and will feature a single-screw pump have a certain extent.
无论改变泵出口管线结构还是改变泵吸入口管线结构，都会对单螺杆泵的特性产生一定程度的影响。
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