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- Its main return circuit adopts thyristor contactless switch,so can turn off circuit quickly,precisely and reliably. 该系列点焊机主回路均采用晶闸管无触点开关，电路关断时间快、准确、可靠。
- Drainage gas lane acts as air leak congruence, which has the function of diffluencing gas.And the closer is the distance from its position to return airway, the better diffluence effect is. 泄排巷相当于漏风汇，具有分流采空区瓦斯的作用，并且其位置离回风巷越近，分流效果越好；
- Summary of Leading Support Equipment in Return Airway 工作面顺槽超前支护设备现状综述
- Lay out the return airway to improve the safe degree of the ventilation system 布置采区专用回风巷提高通风系统安全度
- Using Descending Ventilation for Coal Recovery in Coal Face and Return Airway 采用下行通风回收采面及回风巷的实践
- Fast driving method of west main return air roadway in Shihe mine 寺河矿井西总回风大巷快速施工法
- The main impediment to growth is a lack of capital. 影响发展的主要障碍是缺乏资本。
- Analysis on the measuring results showed that the resistance distribution was rational, the resistance centered in return airways, and the air flow could meet the requirements of mine production. 分析结果表明：百善煤矿通风系统阻力分布基本合理，风量能够满足矿井实际生产的需求，矿井通风阻力主要集中在回风段。
- Crowds thronged the main square of the city. 城里的大广场上挤满了人群。
- The whole school (was) assembled in the main hall. 全校在大礼堂集合。
- The main feature on the program is her song. 那个节目的主要号召物是她的歌。
- Fables often have animals as the main characters. 寓言常以动物为主角。
- A heavy snowfall block the main road. 一次严重的降雪阻塞了主要公路。
- The gas main explode and set fire to the house. 煤气总管爆炸引起房子失火。
- Application of Continue Join Technology of Return Airway of Full-mechanized Sublevel Caving Faces in Dalong Coal Mine 综采放顶煤工作面回顺延接技术在大隆矿的应用
- I grasped the main point of the speech. 我领会了这篇演讲的要点。
- The country's main products are gold and cocoa. 这个国家的主要产品是可可和黄金。
- Men and machines poured along the main highways. 人和机动车顺着公路如潮涌而去。
- Special Support Used in Haulage Way and Return Airway of 21123 Fully Mechanized Face during Larger Ground Pressure 21123综采工作面运输及回风巷的特殊支护
- A main feature of computer virus. 计算机病毒的一种主要特性。
