Ozone is a highly reactive form of oxygen gas.臭氧是一种非常活跃的氧气形态。Ozone is produced by the reaction between oxygen and ultra-violet light.臭氧由氧气和紫外线发生反应而产生。Carbon, hydrogen and oxygen combine chemically to form carbohydrates a...
We watched her munch through two packets of peanuts.我们看她津津有味地嚼了两包花生米.The packets are measured to reduce waste.包裹的大小经过测量以减少浪费。...cornflake packets, bottles, and all the flotsam and jetsam of the kitchen.玉米片包装盒、瓶瓶罐罐和厨房里各种杂...
Once the cold water enters the flack, the vapor pressure falls quickly.一旦冷水进入长颈瓶, 水气压就迅速下降.A test device for flack flowing systems based on virtual instrument technology is developed.研制基于虚拟仪器技术的高炮随动系统性能检测装置....