1·介绍诺日士品牌最新推出机种QSS - 3202及QSS - 3301，包括其新增功能及优胜之处。
Introduce Noritsu branded newly released machines, namely QSS-3202 and QSS-3301, including their new functions and merits.
2·结合寺河矿2301、3302、 3301工作面应用三进两回偏Y型通风方式，取得良好效果，上隅角瓦斯始终处于受控状态。
The application of three-down-two-up and inclined to Y type ventilation in work surface 2301, 3302, 3301 of Sihe mine has got good effects and the up corner gas is under control.