锤体

小鼠不同卵龄卵母胞细纺锤体位置及对去核效率的影响

Effects of Mouse Oocyte Ages on Spindles Location and Enucleation Efficiency

锤体精锻新工艺与预锻模设计

New Process and Design of Pre-forming Die for Precision Forging U.S.A Type of Octagonal Hammer

认为与桩等波阻的细长状锤体能够产生理想的应力波波形；

Slender hammer that is equal to wave resistance of the pile can bring ideal stress waveform .

本实用新型涉及一种轻便手锤，包括，锤体和锤柄；

The utility model relates to a portable hand hammer which includes a hammer body and a hammer handle .

计算结果表明：锤体数、流性指数及流道的形状对压力分布的影响很大。

It is concluded from the results that number of spindle , index of flow characteristic and shape of flow slot affect the distribution of the pressure strongly .

本文应用冲击机械系统动力学分析打桩过程中锤体与桩撞击时应力波的产生、传播以及该波对沉桩过程的影响。

Mechanical impact dynamics is used to analyse the production and spread of stress wave when hydraulic pile hammer hammerblows piles , the stress wave influence the course of driving pile .

本文讨论了无弹簧式振动锤锤体在每个运动周期内冲击一次的简单周期运动。

He paper is concerned with the stability of the springless vibrohammer periodic motion with one shock per period .

介绍了美式八角锤锤体精锻成形新工艺及其预锻模结构设计要点。

A description has been given to new process and important points of structure design of pre-forming die for precision forging U.S.A type of octagonal hammer with a practical die presented .

文中采用八节点六面体单元对桩锤、桩体和地基进行有限元离散化，用摩擦接触单元来模拟桩-土接触面，用中心差分法对运动方程进行数值积分。

Discretizations of hammer , pile and soil are achieved by the use of 8-nodes solid elements . Interfaces of pile and soil are simulated by frictional contacts , and the equations of motion are integrated by the central difference method .

潜孔锤反循环钻头体的改进与内部流场的仿真分析

Improvement of DTH reverse circulation bit and its emulator on interior fluid field