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- Air consists chiefly of nitrogen. 空气主要由氮气组成。
- Lead aprons shield people from radiation. 铅做的工作裙可使人免进辐射。
- Nitrogen forms most of the Earth's air. 地球上空气的大部分成分是氮气。
- The lamp is full of gaseous nitrogen. 灯里充满了气体氮。
- He lied to the court to shield his friend. 他对法庭说谎以包庇自己的朋友。
- The sword glanced off the shield. 剑擦过盾牌。
- Nitrogen forms about 78% of the earth's atmosphere. 氮约占地球大气的百分之七十八。
- nitrogen shielding 氮保护
- A pad or shield of cloth worn over an eye socket or an injured eye. 护眼片,眼罩带在眼窝或受伤的眼上的垫子或布片
- A pair of horizontal parallel lines drawn across a shield. 盾形纹章上的横条纹画在盾形纹章上的两条水平的平行线
- This car polish is an effective shield against rust. 这种汽车上光蜡很有防锈作用。
- Motorcyclists must wear helmets to shield them from injury. 摩托车手必须戴头盔保护自己免受伤害。
- The shield protected him from the blows of his enemy. 这盾牌保护他免受敌人的打击。
- Will you sunder nitrogen from air? 你能从空气中把氮气分离出来吗?
- A shield placed to protect an object from the wind. 风挡为防止一个物体受风吹而安置的保护物
- Nitrogen is the most commonly used gas. 氮气是最常用的气体。
- You can think of shielding as serving two purposes. 屏蔽的作用可以从两方面来理解。
- Sample gas tubes are flushed with nitrogen. 采气管得用氮气吹扫。
- The main reservoir of nitrogen is the atmosphere. 氮的主要蓄存库是大气层。
- What is the percentage of nitrogen in air? 空气中所含的氮的比例是多少?