Flow friction characteristics of the holed-baffles;
开孔折流板流动阻力特性
Numeric Control Machining of the Hole in the Body Parts of the Case;
箱体零件中孔的数控加工
Correct measurement of position and size for screw hole in three coordinates;
三坐标对螺纹孔位置尺寸的测量方法的探索
Current situation and development of fractal characteristic of pore structure of concrete
混凝土孔结构分形特征的研究现状与进展
Study on the Machining of Micro Pore on SiCp/Al Composites by EDM
电火花加工SiCp/Al复合材料微细孔的技术研究
Study of finite elastic plane with multiple holes;
多孔有限弹性平面问题的研究
Analysis of stress field of finite plates weakened by holes;
开孔有限板的孔边应力场分析
A plate containing multiple elliptical holes or cracks is discussed, and a correspondin.
本文应用各向异性弹性力学的复变函数理论,用多保角变换的方法,导出了含有任意多个任意位置椭圆孔的各向异性复合材料板的多复变量应力函数表达式,然后在单位圆周上进行复Fourier级数展开,用待定系数法确定应力函数的未知系数,从而计算弹性板的应力场。
In order to improve the aperture’s machining quality,we develop the method of replacing common reamers by stepped reamers to machining the aperture.
为提高孔的加工质量,将铰刀的结构改为阶梯式。
Rightness of dime nsions mark will directly affect machining process and precision , in particular dimensions mark on symmet ry structure of aperture and key slot in spares is to be drawn in accordance with symmetry shape tolerance an d demand in utterance and therefore the mark way is flexible .
尺寸标注是否正确将直接影响零件的加工难易和精度 ,尤其对于零件上孔、键槽等对称结构的尺寸标注 ,视其有无对称度形位公差要求和使用要求的不同 ,这些对称结构的尺寸标注形式也是灵活多变的 。
Temple and Cemetery of Confucius and the Kong Family Mansion in Qufu
曲阜孔府、孔庙、孔林
(CAVITY 3) TO GROUND (CAVITY 5).
（孔３）接地（孔５）。
/ No match for Confucius before/Or after him/ Confucius, Confucius,/The great Confucius!"
孔子以前，既无孔子； 孔子以后，更无孔子。
In Chinese, the three are collectively called San'Kong wherein san means three and Kong is the surname of Confucius in Chinese.
人们把孔庙、孔府、孔林称为“三孔”。
Point-to-point systems are suitable for hole-machining operations such as drilling, countersinking, counterboring, reaming,Boring, and tapping.
点位系统适用于钻孔、锪孔、扩孔、铰孔、镗孔、攻丝等孔加工。
tap(ping) drill
螺丝孔钻，螺丝底孔钻
pore volume of porous packing
多孔填充剂的孔体积
diameter and number of hole
喷嘴量孔孔径及数目
Decorated with embroidered holes or eyelets.
用绣的孔或孔眼装饰的
Black of the card
盲孔(纹板上无孔的部分)
outside perforation packing
射孔孔眼外砾石充填
observation hole
(窑炉)观察孔,看火孔
paper tape puncher
纸带穿孔器纸带凿孔机
gravel packed perforation tunne
填满砾石的射孔孔道
The sorker was drilling.
此工人在用钻孔机钻孔。
A hole made by a burrowing worm.
蛀虫孔一种蛀虫蛀的孔
square-edged orifice
直角铣孔流量计孔板
condenser aperture
聚光镜孔径;聚光镜孔径;聚光器孔径;聚光器孔