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农田冻土深度观测
释义
农田冻土深度观测
Encyclopedia
农学
农田冻土深度观测
释
field observation of frozen soil depth
农田冻土深度观测
对农田土壤冻结时间、冻结层次及其上、下限深度与冻结程度的观察与测量活动。
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Gun ma-ken
Gun man
Gunnar Fant
Gunnar Gunnarsson
Gunnar Heiberg
Gunnar Jarring
Gunn device
Gunn diode oscillator and frequency multiplier
Gunn diodes
Gunn effect
Gunning
gunning materials
Gunn Peterson effect
Gunn-Peterson effect
Gunn-Peterson test
Gunn-Peterson trough
Gunn-Peterson效应
gun of coring
gun perforation
Gunpowder Factory
Gunpowder Revolution
gunpowders weapons
gunpowder tea
gun propellant
gun propellant charge
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