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...
无论走到哪里，罗盘仍然指向北或南。You can go anywhere and still the compass points north or south.罗盘指针的摆动the oscillation of the compass needle罗盘的指针指向北方.The needle of a compass points to the north....