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- drawing of copper tubes 铜盘管拉拔
- Applying 2D axisymmetric elastic-plastic FEM, the simulations of drawing of B10 copper tubes were carried out with the aid of nonlinear FEM software Marc. 借助大型非线性有限元软件Marc,应用二维轴对称弹塑性有限元法模拟了B10白铜管的拉拔过程,对比分析了优化模具后铜管拉拔和实际生产中的铜管拉拔对模具以及铜管质量的影响。
- The mesh of copper tubes and loading ways of the balls are the key problems during three dimensional FE simulation of ball spinning of inner grooved tubes. 内螺纹管滚珠旋压三维有限元模拟中,铜管的网格划分和滚珠加载方式是模拟的关键问题。
- The main application products of copper alloy are copper wire for WEDM、copper tube for air conditioner、copper tube for heat sinker. 铜合金应用制品主要有线割放电加工用电极铜线、空调设备用铜管、散热器用铜管。
- Continuously Annealing Stove of Copper Tube Roller-Bottom Style Micoxidation from Arom America EF corporation. 从美国EF公司引进的铜管辊底式微氧连续退火炉。
- The alloy No and temper of copper tube shall conform to the requirements in table 1. 光管的牌号和状态应符合表1的要求。
- ADJUSTED PRESSURE/TEMPERATURE RATINGS FOR JOINTS MADE OF COPPER TUBE AND SOLDER END VALVES? 在连接铜管和焊接端口阀门时要核对压力/温度额定值?
- He showed me a drawing of the glacier. 他给我看一张冰川图。
- The outside diameter of copper tube shall be tested by Micrometer. The tooth depth and the bottom wall thickness shall be tested by Microscope. 外径尺寸用外径千分尺测量.;齿高和底壁厚用双目倒置小金相测量。
- Solder Joint - NIBCO pioneered the development of the solder joint and its application to the field of copper tube piping. 焊料连接-美国尼伯科公司是开发焊料连接方式的先驱者，并将这种连接方式应用到铜管管道领域。
- He made a drawing of flowers and plants. 他画了一张花卉画。
- With the requirement increasing for copper tube , the traditional production technology of copper tube can not satisfy requirement . 随着对铜管需求量的不断增加,传统的铜管生产工艺已经不能满足需要。
- Results show that the brittle fracture is mainly caused by hydrogen brittleness that results from the oxidation arid absorbing hydrogen of copper tube during braze welding. 同时在加热和冷却时，由于异种材料的热胀系数差别过大，产生的较大热应力作用于已存在的裂纹，促使裂纹二次扩展，甚至使得晶粒脱落产生空洞，最终导致焊接接头漏气失效。
- Brass is an alloy of copper and zinc. 黄铜是铜和锌的合金。
- Brass is formed by the fusion of copper and zinc. 黄铜是由铜和锌熔合制成的。
- Previously they are often made of copper that is precious in price and poor in nature resources, so it is certain that they will be made of brazed steel tube instead of copper tubes. 以往采用铜来生产这种油管,其成本较高、资源少且加工精度低,而用卷焊管替代铜管则是发展的必然趋势。
- He had been copy the drawing of an antique coin. 他正在临摹一枚古币的图样。
- We also study the substrate self-bias jumped delay, double-steady delay and self- oscillation etc with the condition of copper belt discharge antennas, and compare with datum which are obtained with the condition of red copper tube discharge antennas. 研究了铜带放电天线下基片自偏压的跳变回滞、双稳回滞、自振荡等特性,并与多匝铜管放电天线下的结果进行了比较。
- She had done a drawing of her mother. 她给她母亲画了像。
- A large cooking pot made of copper or often of iron. 金属锅用铜或铁铸成的大煮锅。
