heavy duty service meaning in English
繁重条件下使用
深井作业
Examples
- All of cranes are used in heavy duty service with double brakes to ensure safe operation
本起重机均为重级工作制度为确保起吊安全起升机构备有双制动器。 - 345 , malleable iron flanges , pipe fittings and valve parts for railroad , marine and other heavy duty service at temperatures up to 650 degrees f 345 degrees c
铁路,船舶和其他重型装备在温度达到650华氏度 - In addition to , the fatigue crack between web and upper flange of welded steel crane beam on heavy duty service was discussed , and based on long - term observation and research , the author classified fatigue crack into bearing type and middle type crack along the horizontal direction . the causation , distributive law and mechanism of the crack were analyzed , and the precautions to take and the measures to remedy crack were presented . the main defacts including damage , crack , erosion and aging in structures , especially in concrete structure were introduced ; the defact mechanism was analyzed and the precautions to take were also given
另外，作者对重级工作制焊接钢吊车梁腹板与上翼缘连接焊缝的纵向水平疲劳裂缝进行了长期的观察和研究，根据疲劳裂缝产生的不同机理，将其分为支点裂缝和肋间裂缝，并讨论了两类裂缝产生的原因、分布规律、机理以及防治的措施；对工程中经常遇到的结构构件，尤其混凝土构件的几种主要病害(损伤、裂缝、腐蚀与老化)进行了机理分析并提出了防治措施。