thirty all是什么意思

网络释义

用法例句

This essay introduces the methods how to solve the problems that the cage stops at the first stop and then was lifted quickly and directly without the second stop or it even can't release the brake at the second stop by innovating the electric control system of friction-wheel winch.

巨源煤业公司对摩擦轮绞车电控系统进行了改造,试运行中出现罐笼在井口第一次平层后未经第二次平层就直接开快车提升现象和第二次平层后开车时不松闸问题,本文介绍其处理方法。

In view that large top torque and negative torque are produced when crank balance (primary balance) is adopted, we present the secondary balance of beam pumping unit.

针对游梁式抽油机在采用曲柄平衡（又称一次平衡）时存在的峰值转矩较大、负转矩严重等现象，提出了有关抽油机的二次平衡问题。

The newly-designed energy-efficient beam pumping unit adopted the spring energy storage device to achieve the secondary balance,whose structure,principle and main features were also analyzed.

运用动力学仿真方法分析了4种应用于抽油机的节能装置的节能效果,并设计了采用弹簧储能装置进行二次平衡的节能型游梁式抽油机。

In this paper, the plane two-dimension numerical simulation is used to study the scour in a river whose bed is mostly cracked bedrock at the lower reaches of a spillway.

对溢洪道下游破碎基岩为主的非沙质河流冲刷进行了平面二维数值模拟计算方法的探讨。

The plane two-dimension numerical simulation is used to study the simulation and calculation of the scour in a river whose bed is mostly cracked bedrock at the lower reaches of a spillway.

采用平面二维数值模拟方法 ,对溢洪道下游河床以破碎基岩为主的河流冲刷进行了模拟计算方法的探讨 。

Based on curvilinear grids,plane two-dimension flow mo.

基于曲线坐标系，建立了平面二维水动力数学模型。

The Structure and Characteristic of Commonly Used 2-finger-parallel Grippers;

几种常用的二指平动抓手的结构和特点

Energy Saving Analysis of Secondary Balance Aohieved by Using of Spring Energy for Pumping Unit

用弹簧储能装置实现抽油机二次平衡的节能分析

On Romania s Diplomacy of Balance before the Outbreak of the Second World War;

论第二次世界大战前罗马尼亚的平衡外交

Concept of Coaxial Secondary Counterbalanced Beam Pumping Unit and Energy-Saving Analysis

一种同轴二次曲柄平衡抽油机方案及性能分析

The second degree complex number method and its application on the balance of inertia force of spatial mechanism.

二次复数法及其在空间机构惯性力平衡中的应用

Reconstruction of the Pitch Recovery Pipe and Vapor-liquid Equilibrium Pipe in the Second Evaporator

焦油蒸馏二次蒸发器沥青采出管和气液平衡管的改造

Model Reduction Based on Internal Balance Transform for Quadratic Characteristic Indexes Function

基于二次型性能泛函内平衡变换的模型降阶研究

The precision of the dynamic balance can attain by means of decreasi ng the couple unbalance through moving the balance blocks many a time.

通过多次移动平衡块减小偶不平衡，直至达到动平衡精度要求为止。

Balance is opposed to imbalance; the two change into each other, oppose yet complement each other.

平衡与不平衡相对，二者相互转化、反相成。

The performance be good , when judge by their usual standard

按他们平时的水平衡量, 这次演出不错

The performance was good, when judged by their usual standards.

按他们平时的水平衡量, 这次演出不错.

The performance is good, when judged by their usual standard.

按他们平时的水平衡量，这次演出不错。

second-order homogeneous nonstationary process

二阶齐次非平稳过程

single movement to and fro when equilibrium has been disturbed

（偏离平衡位置的）一次往复振动

Our accounts balance for the first time this year.

今年我们第一次收支平衡。

My accounts balance for the first time this year !

我的帐上今年第一次出现收支平衡！

My accounts balance out for the first time this year.

我的账今年第一次收支平衡。

When the core is displaced, the inductive reactance of the secondary coil is unbalanced.

当铁芯移动时，次线圈的感抗就不平衡。

The Analytic Hierarchy Process Used in Restaurant Achievement Evaluation with the Balanced Scorecard;

饭店业绩评价的平衡计分卡层次分析