null cone是什么意思

网络释义

用法例句

The main points for design of the single_taper part were mainly introduced.

提出了一种新的双锥回转体零件的成形方法———先加工单锥,再成形双锥,最后整形 ,重点介绍了单锥零件的设计要

Considering the human s vision speciality,aims at the pretreatment of image signal of defect detection of cone object,age including some defect an algorithm is proposed to find the threshold,with defect statistic feature of gray-level image including defects.

根据人的视觉感官特性,针对锥体零件缺陷检测中的图像信号预处理,利用含有缺陷的灰度图像的灰度统计特征自动找出分割图像的灰度阈值。

Hydraulic counter pressure drawing is one of newstamping technology, research by numerical simulation onconical part deep drawing with hydraulic counter pressure ispresented.

充液拉深是一种板料冲压成形新工艺，本文用ＭＡＲＣ软件对圆锥形零件充液拉深过程进行了数值模拟。

Therefore it is necessary to study forming characteristic of conical part, to analyze various parameters'influence on its forming limit, and to define reasonable blank holding force(BHF).

圆锥形零件是曲面类零件中较为典型的零件，对其冲压成形过程的研究是进行曲面类零件研究的基础。

Cohomology and Nullcones of Jacobson-Witt Algebras;

Jacobson-Witt代数的上同调与幂零锥

The Research on the Limit Parameters for One-Operation Forming the Conical Part in Deep Drawing;

圆锥形零件一次成形极限参数的研究

Research on Reasonable Blank-Holder Force and Deep-drawing Limit of a Conical Part;

圆锥形零件极限拉深系数及合理压边力的研究

The Positive Cone and Semi-order Yielded by the Bounded Linear Functional in Banach Spaces;

Banach空间上非零有界线性泛函导出的正锥与半序

Influence of the Axle s Precision about the Centerhole s Cone area;

中心孔锥面面积对轴类零件加工精度的影响

Process Analysis and Die Design of Three-Face Cone Part

面锥形零件的成心形工艺分析及模具设计

Analysis of Improper Engagement of Zero Degree Arc Bevel Gear

航空发动机零度圆弧锥齿轮啮合不良原因分析

Calculation of critical blank holder force for drawing cone part with semicircular drawbead

半圆筋拉深锥形零件中临界压边力的计算

One is single-cone sampling tomosynthesis which corresponds to the zero order Bessel window function.

一种是以零阶贝塞尔函数为窗函数,采用单个的采样园锥.

The structure and working principle of a screw tap holder is introdu- ced,and the design calculation of its main parts is presented.

介绍了快换丝锥夹头的结构、工作原理和主要零件的设计计算。

A Numerical Study of the Evolution of 2-D Disturbance in Supersonic Sharp Cone Boundary Layer with Zero Angle of Attrack;

零攻角尖锥边界层中二维扰动演化特征的数值研究

The Numerical Design System of Precision Forging Die of Straight Bevel Gear for Automobile Series Parts;

汽车系列化零件直齿圆锥齿轮精锻模具数字化设计系统开发

The Stability Analysis and Transition Pridiction of the Hypersonic Boundary Layer over Blunt Cone at Zero Angle of Attack

高超声速零攻角钝锥边界层稳定性分析及转捩预测

Series of conical tapers and taper angles

GB/T157-1989锥度与锥角系列

special taper thread tap for gas cylinder

气瓶专用锥形螺纹丝锥

Special taps of taper threads for gas cylinders

GB/T10878-1989气瓶锥螺纹丝锥

Of, relating to, or shaped like a cone.

锥体的，锥状的锥体的、与之有关的或锥状的

To shape(something) like a cone or a segment of one.

使成锥体使（某物）成锥状或成为锥体的一部分