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- According to the characters of helium arc welding of tantalum sheet,based on ANSYS,three-dimensional transient numerical dynamic simulation of tantalum TIG helium arc welding was carried out. 针对钽薄板氦弧焊接的特点,基于有限元分析软件ANSYS,对钽薄板TIG氦弧焊接的温度场进行三维数值动态模拟,并将计算量控制在可接受的范围内。
- Joan of Arc was one of France's greatest daughters. 圣女贞德是法国最伟大的女性之一。
- Joan of Arc was burnt (alive) at the stake. 圣女贞德在火刑柱上被(活活)烧死。
- Joan of Arc was made a saint in 1920. 1920年,贞德被追封为圣女。
- The sun appears to move in an arc across the sky. 太阳看起来在天空以弧线运行。
- helium arc 氦气电弧
- helium arc welding 氦弧焊,氦气保护焊
- Helium and neon are inert gases. 氦和氖为惰性气体。
- Joan of Arc led a large army to raise the siege of Orleans in1429. 贞德在1429年率大军解除了英军对奥尔良的围攻。
- The stick of carbon is often used in an electric arc lamp. 碳精棒常用于电弧灯。
- The antimatter equivalent of helium. 反氦与氦等价的反物质
- Helium was discovered on the sun. 氦是在太阳上发现的。
- The iron rod supporting the valances was bent in an arc. 挂窗帘上部短幔的铁棍弯成了个弓形。
- Most big balloons are now filled with helium. 现在许多大气球中充的是氦气。
- A fountain of helium spurt out of the tube. 有一股氦的喷泉从小管中喷出。
- Helium is a gas used in balloons. 氦是一种用于气球的气体。
- Atoms of hydrogen are fused to make helium. 氢原子可熔合成氦。
- Arc strikes outside of the welds were avoided. 焊缝外要避免电弧穿刺。
- The element of helium was first found in the sun. 氦元素最初是在太阳里发现的。
- The curve ball is also called arc line ball. 曲球打法又叫弧线球。