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。
Using the nonlinear function of finite element software-Marc,a FEM model for the contact between lining board and wheel was presented,which gives the relations of maximal stress to the size of threaded hole in the lining board.
利用有限元软件Marc的非线性功能,建立衬板与轮子接触的有限元模型,得到衬板上螺纹孔尺寸和最大应力的关系,提出了改善衬板受力的设计方案。
Introduced the structure process of the capping plate, analyzed four threaded holes process request, adopted the special clamp to machining the four threaded holes.
介绍了盖板零件的结构工艺,分析了零件上的4个螺纹孔的工艺要求,针对4个螺纹孔的加工,通过采用专用的夹具,简化了生产零件的模具结构,实现了零件产品的最终要求,保证了质量,同时也提高了效率、降低了成本。
Many factors which possibly lead to failure of extended tolerances of threaded holes are analyzed,and a discussion on the method of prevention is made.
对引起螺纹孔延伸公差带失效原因的各种因素进行了分析,并对采取的预防措施进行了讨论。
The deep hole thread processing efficiency height and the processing quality,directly affects the components the production efficiency and the precision.
深孔螺纹加工效率的高低和加工质量的好坏,直接影响零件的生产效率和精度。
Working technique of self-tapping thread hole on aluminum part;
铝件螺纹孔自攻加工工艺
Mainly introduced injection mold design method for the water tank with many thread holes and cut plastic blind hole, using the cylinder driving system, mold design idea was unique,the structure was novel and compact, gained good effect in production, it had important reference and guide function.
重点介绍了接水盘多个螺纹孔、减胶盲孔在模具设计中实现的方法,采用油缸驱动系统,模具构思独特,结构新颖、紧凑,并在生产中应用取得满意效果,对同类型模具结构设计有重要的借鉴与指导意义。
In this paper,a fixture is designed to turn the thread holes on backwater gland in CNC lathe.
设计的夹具是用于在数控车床上车削回水盖螺纹孔的专用夹具,属花盘式车床夹具,并且带有分度装置,主要由过渡盘(与车床主轴连接)、夹具体、定位元件(分度盘、圆柱销、菱形销)、夹紧元件(压板)、分度装置(分度对定装置和分度盘)等组成。
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。