grooved pipe base 带沟槽的中心管
perforated pipe base 带眼中心管
pipe base perforating 中心管打眼
full weld-on pipe base screen 带中心管的全焊接筛管
pipe base width 管坯宽度
pipe base perforanting 中心管打眼
The working principle and characters of heat pipe are discussed in the paper firstly, because the applications of heat pipe base on them.
本文首先论述了热管的工作原理和特性，热管的应用是以此为基础的。
The building begins with the installation of its base - the central pipe.
这种建筑从安装其基础——中心管开始。
An automatic topdressing system was designed on the base of the principle of hydrokinetics using energy of static pressure for pipe irrigation and the feature of Venturi pipe in solar greenhouse.
依据流体动力学原理，利用日光温室管网灌溉的静压能和文丘里管的特性，设计出在日光温室正常灌溉情况下的自动施肥系统。
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