heavy-duty operation,heavy duty service,rough service是什么意思

用法例句

Application of antomatic image-seperated technique in high slope heavy load railway section;

自动过分相技术在高坡重载铁路区段的应用

Dynamics analysis on heavy loaded soft startup system based on differential planet gear train;

基于差动行星轮系的重载软启动系统的动力学分析

On the design method of heavy load asphalt pavement;

重载沥青路面设计方法探讨

The serious overloading of vehicles and the shortcomings of highway surface designs have left many highways in early fatigue cracks and tracks.

近年来重载交通的日益严重和当前路面结构设计存在缺陷使得很多公路出现早期疲劳开裂和车辙现象。

Three kinds of overloading pheomena in Ada langunge are listed,and a binary tree structure for expression allocation is built at first.

先简要介绍了Ａｄａ语言中的３种重载现象，并给出了表达式的二叉树存储结构，随后阐述了判别重载的基本算法，即先后对表达式分析树进行自底向上和自顶向下两遍类型匹配，来取得表达式最终的惟一合法释义，最后给出了一个例

Function overloading permits one function-name to define multiple functions.

重载是构成计算机语言的基础之一。

The necessity to mount the empty/load brake equipment on heavy haul freight cars due to change of the gross-to-tare ratio in order to reduce empty-car brake cylinder pressures is analyzed.

分析了重载货车因空重比的改变而加装空重车调整装置,以降低空车制动缸压力的必要性,同时分析了低制动缸压力对制动效率、制动缸活塞行程等的影响,认为纯制动率是影响制动效率的主要因素。

The technical development railway freight transport equipment in our country is expounded from the aspects of quickness, heavy haul and specialization.

简述了国外货运装备的现状和发展;从快捷、重载和专用化角度论述了我国铁路货运装备的技术发展,比较了我国与国外发达国家在货运装备方面的差距,并提出了发展建议。