Knowing how to redirect data as stdin or stdout, how to use the pipe, and how to use operators in UNIX helps you write more powerful scripts with better error trapping and cleaner logic.
您了解了如何把数据重定向到stdin或stdout，如何使用管道，以及如何在UNIX中使用操作符；这些都有助于您编写出更强大的脚本，更好地捕捉错误，使逻辑更简洁清晰。
Demolition material are the advantages of pipe cleaner pipe cleaning, water flow rate can be relatively low, may be suspended.
拆出料管法的优点是管道清洗较干净，水源的流速可以较低、可以暂停。
The invention relates to a suction pipe of the vacuum cleaner.
本发明涉及一种真空吸尘器的吸入管。
They use a pipe to spray water on themselves and then a vacuum cleaner to dry.
他们用管道来冲洗，用真空吸尘器来吹干。
As the bottom part of this pipe has more deposit usually, so this method can make the stovepipe more cleaner, and control the quantity of the washing liquid cannot corrode the other part of this pipe.
由于通常在炉管底部有较厚的沉积物，故此清洗方法可将炉管底部清洗干净，且清洗液不会对炉管其它部位造成过度侵蚀。
The invention relates to an auxiliary suction pipe of vacuum cleaner with its suction portion for suction of foreign matter can turn freely.
本发明涉及吸入异物的吸入部能够自由转动的真空吸尘器的辅助吸管。
In Metal fields, we supply Stainless Steel, Special Steel Alloy, Vacuume Insulation Panel, Cleaner for Metals, Steel Pipe and Wire Pipe Products.
在金属方面，我公司涉及的有：不锈钢，高合金材料，真空隔热材，金属油污清洗剂，管材，线材加工品等产品。
An intake pipe (40) connects between the upper surface of the cylinder head (20) and an upper surface of the air cleaner (22).
进气管(40)连接在气缸盖(20)的上表面和空气滤清器(22)的上表面之间。
An intake pipe (40) connects between the upper surface of the cylinder head (20) and an upper surface of the air cleaner (22).
进气管(40)连接在气缸盖(20)的上表面和空气滤清器(22)的上表面之间。
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