昨天上午8时50分，南岗刘村的曲女士在家门口和七名村民一起纳凉时，突然感觉身上落了许多白色晶状体的颗粒，她伸手一摸，颗粒很快就融化了。
Yesterday, 8:50, Nangang Liu village, qu Ms. Liu at home and enjoy the cool air with seven villagers, suddenly they felt a lot of white particles lens. When she touched, the particles quickly melt.
超前支护锚杆锚固后与顶板岩石构成一体，这样使超前锚杆形成组合梁作用，放炮后，能够阻止顶板岩石冒落。
Forward support bolt combined with roop rock by bolting can play a roll of combined beam, which can prevent roof rock caving immediately after explosion.
根据硅粉纯化的要求，提供了一种长落程和高反应速率的冷等离体反应器。
According to the purity requirement for Si powder, a cold plasma reaction chamber with long drop distance and high reaction rate is provided in the paper.
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