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- The safety problems are more severe for low-pressure depositions because the processes often use concentrated gases. 对于低压淀积来说安全性问题更为突出，因为这种工艺通常使用高浓度的气体。
- The ratio of the square of certain concentration gas diffusion depth and diffusion time is constant when it diffuses and reacts through the solids bed. 一定浓度的气体通过固体颗粒层扩散-反应时，其扩散深度的平方与扩散时间的比值为常数。
- Direct discharge of mine gas is not only a waste of natural resources but exacerbation of greenhouse effect.How to utilize the low concentration gas is an urgent task to study. 矿井回风流瓦斯直接排放到大气中,不仅造成了资源的浪费,而且加剧了温室效应,如何利用低浓度瓦斯是迫切需要研究的课题。
- The crowds concentrated round the palace. 人群汇集在宫殿的四周。
- I'll refill my cigarette lighter with gas. 我将给打火机再灌满汽油。
- The gas bubbled to the surface of the water. 气体变成气泡升上水面。
- We are well served with gas in this town. 这个城镇煤气供应得很好。
- Our population is concentrated in the big cities. 我国人口集中在大城市里。
- He cooks his meal with a gas stove. 他用煤气炉做饭。
- Don't forget to drop by at the gas station. 别忘了到煤气站去看看。
- I was given gas when they pulled my tooth out. 给我拔牙时用了一氧化二氮。
- His long speech was nothing but gas and hot air. 他的长篇大论只是吹牛和空话。
- The gas main explode and set fire to the house. 煤气总管爆炸引起房子失火。
- A whole tankful of gas dropped away because of the tiny leak. 由于这个小小的漏洞，整整一油箱的汽油都漏光了。
- We finally drove up to a gas station. 我们最后驶近一加油站。
- Frank rented out his gas station. 弗兰克把他的加油站租了出去。
- Quick, turn off the gas;the milk will boil over. 快把煤气关掉，牛奶要溢了。
- They concentrated on better definition of the optical image. 他们致力于提高该光学影像的鲜明度。
- The gas is stored under pressure in the tank. 该气体在压缩状态下贮存于罐中。
- She diluted the concentrated fruit juice with water. 她搀水冲淡浓缩水果汁。
