drought degree中文是什么意思

• 干旱等级

• drought    n. 1.旱灾，干旱。 2.〔比喻〕(长期的)缺乏。 3 ...
• degree    n. 1.程度；等级。 2.阶层，地位。 3.学位，学术 ...
• drought    n. 1.旱灾，干旱。 2.〔比喻〕(长期的)缺乏。 3.〔古语〕干渴；干燥。 a prolonged drought 天久不雨，长期干旱。 a drought of good writing 长期缺乏好作品。
• the drought    回归现实
• drought index = drought code    干旱指数
• absolute drought    绝对干旱; 绝对乾旱
• agricultural drought    农业干旱
• atmospheric drought    大气干旱
• conquer drought    战胜干旱
• damage by drought    干旱损害; 旱害
• drought condition    干旱条件
• drought contingency    紧急抗旱措施
• drought control    抗旱
• drought damage    旱害; 旱灾
• drought defence    抗旱
• drought defying    抗旱的
• drought dormancy    旱期休眠
• drought duration    干旱延时
• drought effect    干旱效应
• drought enduring    耐旱的
• drought field    受干旱的田
• drought fire    干旱引起的火灾
• drought frequency    干旱频数
• drought hardiness    耐旱性
• drought index    干旱指标; 干旱指数

• The computed palmer drought index of 124 stations in the north of china are used to analyse some charactersin this region , including the main drouthy years and its severity , the drought range , etc . . we also analyse the main drouthy periods , the frequency of each drought degree , the main area and the drought cycle in northwest china , north china and northeast china . on the base of the further modification of palmer drought severity model , a daily palmer drought severity model are developed . lt indicated that the daily drought index is accordant with the monthly drought index , and can reflect the change of severity in detail
  应用进一步修正的帕默尔旱度模式计算的我国北方地区124个站点的40年逐月旱度值，分析了我国北方地区的一些干旱特征，包括北方地区旱情较重的大旱年及其严重程度、主要干旱区；华北、西北和东北地区各等级干旱发生频率、主要干旱时段、干旱周期等，为防旱抗旱提供了科学依据。