This paper presents the construction and the material selection of two kinds of the u.
本章对两种美国高压三柱塞泵的结构和材料选用作了介绍。
Summarizes the HVAC system design, equipment selection and project construction.
总结了该工程的系统设计、设备选择及工程施工。
The construction-design and the selection of material for bottle and its cover were introduced.
介绍了瓶身、瓶盖的结构设计及材料的选择。
The construction-design and the selection of material for bottle and its cover were introduced.
介绍了瓶身、瓶盖的结构设计及材料的选择。
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