The crashworthiness of grass fiber reinforced epoxy tubes as collision bumper is studied and a comparison of absorption property with aluminum alloy tubes is made.
研究了玻璃纤维增强环氧圆柱管作为缓冲装置的撞击吸能特性，并与铝合金圆柱管的吸能特性进行比较。
2
The comparison of heat transfer performance with three different fin spacing, three different Numbers of tube rows and three different Numbers of tubes under three constraints is carried out.
然后通过三种限制条件对不同翅片间距、不同管排数和不同管数下的换热板芯的传热性能进行了比较。
3
This paper mainly discusses the comparison between the general designs in water wall, roof tubes and low temperature superheaters of the structure of Japanese 350mw boilers and Our 300mw boilers.