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织女二
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织女二
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Epsilon Lyrae
织女二
北天区的天琴座中距离太阳系160光年的一个特殊多星系统。又称双双星,西方星名天琴座ε(ε Lyr)。
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risk early warning information system
risk emergency treatment plan for tunnel and underground engineering
risk estimation of tunnel and underground engineering
risk evaluation method of tunnel and underground engineering
risk evaluation of blasting
risk evaluation of tunnel and underground engineering
risk exposure
risk factor
risk factors of cancer
risk financing
risk function
risk identification
risk identification for immersed tunnel
risk identification for tunnel construction by cut and cover method
risk identification for tunnel construction by drilling and blasting method
risk identification for tunnel construction by shield machine method
risk identification for tunnel construction by tunnel boring machine
risk identification of biological invasion
risk identification of information system project
risk identification of tunnel and underground engineering
risk level of agrometeorological disasters
risk likelihood of tunnel and underground engineering
risk loss
Risk Management
risk management
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