1.
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
2.
paralled orientation. The vestures and warts in intervascular pit chamber separately ware fourd in 5 and 19 species.
维管间具缘纹孔室内有5种具附物，19种具瘤状物。
3.
a simple machine of the inclined-plane type consisting of a spirally threaded cylindrical rod that engages with a similarly threaded hole.
具有螺旋形线状汽缸棒的啮合相似的螺纹孔的斜面型简单机械。
4.
The Analytic Research on the Problem of a Circular Hole with Several Periodic Cracks about Fracture Mechanics;
断裂力学中具有多条裂纹的圆形孔口问题的解析研究
5.
Black of the card
盲孔(纹板上无孔的部分)
6.
"The pin gauges are used to measure the whole distance, the pitch diameter of the thread, etc. Especially, they are suitable for curved groove width measurement."
针规适用于机械加工中孔径、孔距、内螺纹小径的测量,特别适于弯曲槽宽及模具尺寸的测量。
7.
Research on Crack Detection of Porcelain Insulators Based on Image Edge Detection;
基于边缘检测的绝缘子裂纹诊断研究
8.
A small hand tool having a spiraled shank, a screw tip, and a cross handle and used for boring holes.
手钻一种小的手工工具，有螺旋尖头，带槽纹的钻身，横装的手柄，作钻孔用
9.
One that grates, as an implement with sharp-edged slits and perforations on which to grate foods.
磨碎机用来摩擦的东西，如一种带有边缘锋利的切口和孔用来磨碎食物的器具
10.
porous block type arrester
多孔绝缘体型避雷器
11.
live-line (insulated) piercing connector
火线(绝缘)刺孔连接器
12.
quadrant-edge orifice plate
1/4圆周边缘孔板
13.
Plastic injection mould, coolant passages, eject pin and electrical heating holes.
塑胶射出模具–却水孔、梢孔及电热孔.
14.
Any of numerous hand tools for boring holes.
钻孔工具，手钻钻孔用的手持工具
15.
profile and thread rolling die
滚轧型材与螺纹模具
16.
TOOL REQUIREMENT FOR M8x25 Thread
M8×25螺纹需要的工具
17.
tical thread tool microscope
光学螺纹工具显微镜
18.
freshly painted lawn furniture.
新画上细麻纹的家具。