Clothing which is fire - resistant in air maybe readily ignitable in oxygen - enriched atmospheres .在空气中防火的衣服在 富氧 大气中可能很容易着火.Selenium content in Se _ enriched yeast's autolysate was determinated by adopting spectrof...
The latest locomotives embody many new features.这些最新的机车具有许多新的特色.Steam locomotives pumped out clouds of white smoke.蒸汽机车喷出一团团白烟。Steam locomotives were superseded by diesel.蒸汽机车被内燃机车取代了.Compared straight electric locomotiv...