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时间防护
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时间防护
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时间防护
释
time protection
时间防护
在外照射环境下从开始到结束控制受照射的时长来降低受照剂量的措施。
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perennial plant
perennial ryegrass
perennials
perennial stream
perennial weed
Perepelkin crater
Peres-Horodecki criterion
perester
Perestroika: New Thinking for Our Country and the World
peret
Peretz Smolenskin
Perevoshchikov
Perey Quoboza
perfect
perfect adaptation
perfect additive functional
perfect bicompactification
perfect bigraph
Perfect Blue
perfect box
perfect category
perfect closure
perfect code
perfect compactification
perfect completeness
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