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- Calculation method of piston air induced by train motion in subway tunnels is derived based on fluid continuity equation and Bernoulli equation. 以流体连续性方程及伯努利方程为理论依据,针对地铁特点,推导得出隧道内列车活塞风的计算方法,并对影响活塞效应的因素做定性分析。
- Common Problems and Its Treatment for the Piston Air Compressor 活塞式空压机的常见故障与处理
- The air in the garden was warm and fragrant. 花园里的空气一片温馨。
- The archers sent their shafts through the air. 弓箭手向空中射出利箭。
- All the apprentices rushed to help fit the piston. 徒工们都跑过来帮助装活塞。
- Get lathe No.9 set to turn the new piston. 把九号车床调好来车这个新活塞。
- Review of Direct Drive Portable Reciprocating Piston Air Compressors 直联便携式空气压缩机技术进展
- The lack of air in the room make everyone sniffle. 屋子里空气缺乏，使得每个人都频频吸气。
- The piston seems ok. Maybe something else is wrong. 活塞似乎没问题。可能别的什么东西坏了。
- During the intermission, let's go out for some fresh air. 幕间休息时，我们出去呼吸呼吸新鲜空气吧。
- The air held a foretaste of a storm. 天气有要括大风的迹象。
- The air was reeking with the smell of tobacco. 空气中弥漫着烟草的气味。
- A walk in the fresh air will pep me up. 我在空气新鲜的地方散步就感到精神饱满。
- He served one month with the Air Army in Kuwait. 他在科威特的空军里服役1个月。
- Large air and navel forces were set into action. 庞大的空军和海军部队开始行动了。
- His modesty [air of joviality] was all put on. 他的谦逊[愉快的样子]都是装出来的。
- Ida was choking with the dry air. 空气干燥，艾达感到喘不过气来。
- His vibrant voice commove the air. 他响亮的声音振动了空气。
- Fresh air and exercise are good for the health. 新鲜空气和运动有益于健康。
- I shall travel to New York by air this weekend. 这个周末我将要乘飞机去纽约旅行。
