Methods: Using heavy caliber capillary gas chromatography with headspace sampling.方法: 采用顶空进样技术,用大口径毛细管气相色谱法测定.Acid - volatile sulfide in river sediment sample was measured by reaction headspace.采用顶空色谱测定了河流底泥中的可酸挥发硫化物.Two...
The gym can be used by both able-bodied and disabled people.这家健身房健全和残障人士都可使用。While the lads are golfing, I work out in the gym.小伙子们打高尔夫球的时候，我在健身房锻炼。The gym teachers lined us up against the cement walls.体育老师让我们靠着水泥墙排好。...