A bent tube fitting into a swimmer's mouth and extending above the surface; allows swimmer to breathe while face down in the water. 装在游泳者嘴上通向水面的弯管;能够让游泳者在水下呼吸。
Experiment Research on Bent Tube Resistance Loss Based on Hydraulic Pipeline Rheology Test Rig 基于液压管式流变试验台的弯管阻力损失试验
Study on the Fired Capability of Bent Structure of Concrete Filled Steel Tube of Luding Hydropower Station Analysis on Blasting Demolition of RC Frame Structure with Back Columns Not-blasted 泸定水电站厂房钢管混凝土排架柱结构受火性能研究钢筋混凝土框架后排立柱底端不装药爆破拆除效果分析
Flame Stabilization and Study on Combustion of Dense Thin Pulverized Coal with Bent Tube 火焰稳定和弯管浓缩煤粉浓淡燃烧研究
Discussion on Rebound of Bent Tube 弯管回弹问题探讨研究
The calculation formulas for curve type or broken line type of bent tube rebound are put forward on the basis of constant force field and elastic limit rebound theory. 依据恒力场理论和弹性极限回弹理论,提出了曲线型或折线型的计算公式。
A Study on the Bent Tube Measuring Machine with a Contact V-Shaped Groove Probe 接触式弯管测量机研究
Study of the Bent Tube Non Contact Measuring Principle Based on Laser Diodes and Photodiodes 基于半导体器件的弯管非接触测量原理研究
Abstract: Based on experimental studies of the segragation and flow resistance properties of bent tube type dense/ lean pulverised coal burners, the paper deduces a cold state modeling criterion. 该文对弯管式浓淡煤粉燃烧器分离及阻力特性进行了实验研究,导出此种燃烧器冷态模化的相似准则。
A New Approach for the Bent Tube Non-contact Measurement 弯管非接触测量的一种新方法
Discussion on Rebound of Bent Tube A Research on standardization of elbow flow meters 弯管回弹问题探讨研究弯管流量计标准化
A Study of Non Contact Measurement of Bent Tube 弯管非接触测量研究
The results show that: the springback angle of bent tube increases with the bending angle, the gap between mandrel and tube, and the hardening coefficient, but decreases with the hardenability value. 结果表明:回弹角随弯曲角、芯棒与管壁间隙及材料硬化系数的增大而增大,随材料硬化指数的增大而减小。