During the extra kick , maintain a tightly streamlined body line just below the surface ? feeling much as you did when doing the underwater kicking exercise above 第二次蹬腿時,使身體在水面下保持一種緊張的流線型? ?做以上水下蹬腿練習(xí)時,努力體會你的動作。
Loss of head is minimized by the balanced disc and its " aerofoil " design . streamlined body without pockets contributes to straight - through flow 通過平衡閥瓣及其“翼型”結(jié)構(gòu),將水頭損失(或位差損失)降到最小程度。流線型閥體,不再需要凹穴來幫助流體直線流通。
He was used for the limited express passenger train named " asia " in smr . he built of 12 cars by kawasaki and smr shahekou works in 1934 . he has streamline body and 2 meters of driving wheels 用直徑2米的大動論與流線型的車體,從大連到新京現(xiàn)在的長春701 . 4km ,使用的特快"亞洲號" 。
A separation in the boundary layer of fluid about a moving streamlined body , such as the wing of an airplane , causing a breakdown in the smooth flow of fluid and resulting in turbulence 氣流分離移動的流線型的軀體上流體邊界層上的分隔物,如飛機(jī)的機(jī)翼,在平滑的流體流動中會引起故障和湍流
The results are compared with that of a typical common car under same testing conditions , which show that the new concept car has better aerodynamic characteristics than common car due to its ideal streamlined body 通過和同等試驗條件下典型汽車的氣動性能對比,由于新概念車良好的外部流線,其氣動性能明顯優(yōu)于典型汽車。