馋猫爱鱼鱼
氧气(化学式:O2),化学式量:32.00,无色无味气体,氧元素最常见的单质形态。熔点-218.4℃,沸点-183℃。不易溶于水,1L水中溶解约30mL氧气。在空气中氧气约占21% 。液氧为天蓝色。固氧为蓝色晶体。常温下不很活泼,与许多物质都不易作用。但在高温下则很活泼,能与多种元素直接化合,这与氧原子的电负性仅次于氟有关。
阳光白龙
氧气面罩的英文是oxygen mask。
氧气面罩的英文例句:
1、She was muzzled with an oxygen mask and tethered to an IV.
她被戴上了氧气面罩并输上了静脉点滴。
2、He displays fire fighters' equipment, including the oxygen mask, which he encourages his listeners to play with and put on.
他展示了消防员的装备,包括氧气面罩,还鼓励听众把玩并试戴氧气面罩。
3、When I walked into the room, he was wearing an oxygen mask.
当我步入房间时,他正戴着氧气面罩。
4、They are even shown a safety demonstration and given a life vest and oxygen mask.
他们甚至还进行了一场安全演示,并分到了救生衣和氧气面罩。