在这方面, 广告增进了交易人之间的信息交流,由此加强了市场竞争的力量.In this way, advertising enhances information flows between traders and thereby strengthens competitive market forces....
臭氧是一种非常活跃的氧气形态。Ozone is a highly reactive form of oxygen gas.臭氧由氧气和紫外线发生反应而产生。Ozone is produced by the reaction between oxygen and ultra-violet light.每年春天，臭氧遭到破坏，空洞就出现了。Every spring the ozone is chewed up, and the hole a...
Places stress on krypton lamp current repair and light channel adjustment.着重叙述了氪灯电路的修理和光路的调整.The planet's name was Krypton.星球的名字叫克雷普顿.Objective To evaluate the therapeutic effect of krypton yellow laser photocoagula...