They are all alternate pitting except a few species.
结果表明 :该科植物在导管管腔的长度 ,管腔宽度上都有较大的差别 ;纹孔为具缘纹孔 ;纹孔的排列方式上 ,除少数种外均为互列式纹孔式 ;管间纹孔成群分布 ,且绝大部分呈现出规则的形状 ;在成群分布的纹孔内或边缘区域 ,有圆形点状突出物或由大小不同的孔做成的网状突出物 ,在该科中普遍存在。
Study on the Structure of Bordered Pit Membrane and Micropores on Margo of Cunninghamia Lancelata Tracheid;
杉木管胞具缘纹孔膜及其塞缘微孔构造
An Experimental Exploring on Machining Internal Thread of Hardened Steel by EDM
电火花加工淬火钢螺纹孔的实验探讨
Motor vehicles--Pneumatic braking systems--Tapped holes and male fittings
GB/T14171-1993汽车气制动系管路螺纹孔和管接头外螺纹
The threaded holes in the front suspension cradle, if damaged, can repaired by installing a Heli-Coil® thread insert.
前悬吊架的螺纹孔如有受损，可装上Heli-Coil®螺纹套座加以修理。
Black of the card
盲孔(纹板上无孔的部分)
Research on the Decoration of Dragon Pattern in Kongmiao Dachengdian
论曲阜孔庙大成殿龙纹装饰纹样的艺术特色
Interaction between hole edge and line cracks in a thin plate
薄板中孔边裂纹与独立裂纹的相互作用
She screwed her face into wrinkles.
她扳起了面孔,弄得满脸皱纹。
Furthermo re, the zinc vaporating and oxydizing cause air bubble, incomplete fusion and cr ack.
锌挥发和氧化会导致气孔、熔合及裂纹。
All holes were positioned at the tip of the crack.
所有的铝孔都位于裂纹的尖端。
Care lined her face.
她的脸孔因忧恼而起了皱纹。
The gas hole, shrinkage cavity and crack were eliminated through up-grading technology.
并且改进工艺，以消除气孔、收缩和裂纹。
What inspection functions are performed for the detection of casting cracks, porosity, and shrinks?
如何检验铸件的裂纹，缩孔，缩松？
Moiré s Method and Hole Border Strain Detection;
云纹法及其在孔边应变检测中的应用
Surface crack analysis of inner hole of titanium alloy centrifugal impeller
TC11钛合金离心叶轮内孔裂纹分析
Numerical simulation of effusion holes on the longitudinal ripple heat shield
发散孔纵向波纹隔热屏气膜冷却特性
Fabric designs can be changed merely by inserting a series of punched cards into the pattern chain.
更换织物时,只需要将一系列冲孔纹板装到纹链上即可。
All existing web cracks were arrested by drilling 19 mm holes at the ends of the cracks.
所有已存在的腹板裂纹都在裂纹端部钻19mm的孔止裂。