abnormal l radiation 异常辐射
local l radiation injury 局部性放射损伤
total l radiation pyrometer 全辐射高温计
digital l radiation survey meter 数字式辐射测量计
Medical l Radiation Therapist 医学放射治疗师
L-radiation 辐射
l radiation l 伦琴辐射
L the outer layers of space suit protect against harmful radiation from the Sun and bullet-fast particles of space dust called micrometeoroids.
宇航服的外层能够防御太阳辐射和高速微流星体造成的伤害。微流星体是指太空中的微小尘粒。
L Glowing nebulae are named because they give off a dim, red light, as the hydrogen gas in them is heated by radiation from nearby stars.
l有一种星云叫亮星云，它们发出暗淡的红光，这种红光是因为构成星云的氢气受到附近星体的射线激发而发出的光线。
L The clear, plastic helmet also protects against radiation and micrometeoroids.
宇航服的透明头盔，也能够抵御射线和高速太空微粒。
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