1.
Abstract: Porosity of die castings caused by air entrapped into the liquid metal in the shot sleeve is common problem of die csating process.
文摘:压室中气体卷入金属液内而造成压铸件内部气孔是压铸过程常见的问题。
2.
Internal defects:lack of penetration,lack of fusion,slag,gas pole,carck,overheating.
内部缺陷：未焊透、未熔合、夹渣、气孔、裂纹、过热。
3.
Leakage and outgas of dewar vacuum vessel also is analysed.
杜瓦微漏孔和真空室内部材料放气使杜瓦真空度下降。
4.
cutting machine for rubber inner tube valve holes
橡胶内胎气门嘴孔挖孔机
5.
A blast of air is blown through holes in the base of the converter.
从炉子底部的孔中把空气吹入炉中——
6.
Effect of Ultrasonic Treatment on Porosity of High Carbon Steel Ingot
超声处理对高碳钢铸锭内气孔的影响
7.
The abaxial stomatal resistance was smaller than the adaxial.
叶片正面的气孔阻力小于叶片反面对应部位的气孔阻力。
8.
Planting bar used syringes from the bottom of the hole to put adequate amounts of external uniform adhesive filling injection hole, pay attention not to air hole inclose.
使用植筋注射器从孔底向外均匀地把适量胶粘剂填注孔内,注意不要将空气封入孔内.
9.
External defects: undercut,overip,arc pit, gas cavity in surface,crack in surface.
外部缺陷：咬边、焊瘤、弧坑、表面气孔、表面裂纹。
10.
(3) Near the midchord, the suction can provide a higher lift force for the airfoil.
(3)吸气孔位置在翼面的中部附近增升效果较好;
11.
Quaternary Planktonic Foraminiferal Assemblages in the Southern South China Sea and Paleoclimatic Variations;
南海南部第四纪浮游有孔虫群与古气候变化
12.
Research on Key Technologies of Partial Porous Externally Pressurized Gas Bearing;
局部多孔质气体静压轴承关键技术的研究
13.
Investigation of Pressure Distribution of Partial Porous Aerostatic Thrust Bearing
局部多孔质气体静压止推轴承压力分布的研究
14.
free of obstruction by blowing air through.
通过鼻子向外呼气以达到鼻孔内无障碍。
15.
Aerodynamic Investigation of Flow Characters of Internal Cooling Channel with Both Rib-roughened Walls and Film Hole Suctions;
有肋和气膜孔出流的通道内流动特性研究
16.
Research on Automatic Measurement System of Form Error of the Valve Internal Hole
阀套内孔形状误差气动测量系统的研究
17.
CFD Calculation of the Two-Phase Flow inside K-Factor Injection Nozzle
K系数喷油嘴喷孔内气液两相流动的三维模拟
18.
Numerical studies about the discharge coefficient of film cooling hole at narrow space
狭小空间内气膜孔流量系数的数值模拟