温度低于此时的年平均温度。
年降水量和年平均温度的波动特点是决定累加作用时间和影响强度的关键。
The variation of air mean temperature and annual precipitation played a key role in the duration and intensity of cumulative impacts on desertification.
它的自然地理分布存在明显的南缘界限，而分布的南限因子主要与年平均温度有关。
Its natural geographical distribution existed in a distinct southern limit closely related with the eminent factor such as the annual mean temperature.
年平均温度在12摄氏度左右，降雨量为590毫米，平均每年有220天温度在零下。
With an annual average temperature of 12 degrees centigrade, and rainfall of 590 millimeters, it has 220 frost-free days per year.
计算结果表明，当该地区年平均温度较低、在路基高度较小的情况下，铁路保温路基的变形较小。
The computational results indicate that the less embankment height and lower mean annual air temperature result in the smaller embankment deformation.
从逐日序列计算出年平均温度和年极端温度序列，并把修正之前和修正之后的序列趋势进行比较。
Annual mean and extreme temperature series are deduced from the daily observations and trends in the adjusted and unadjusted series are compared.
相反，在该地区年平均温度较高，路基高度也较大的情况下，冻土路基的变形较大，这也和监测结果相符合。
On the contrary, the larger railway embankment deformation will be brought if the railway embankment is high and the area has high average annual air temperature.
文中应用响应谱的离散形式将模式谱的计算结果与北半球（1881—1980年）年平均温度距平序列的实际谱进行了统计检验，从而论证了随机模式模拟全球温度变化的适用性。
The correspondence between the computed spectra by the model and the observed ones of annual mean temperature anomalies in the Northern Hemisphere from 1881 to 1980 is statistically examined.
“人们通常关注年平均温度，这个数值可以给年份排序，但是这种排序经常没有意义”，GISS所长 JamsHansen说道 "热带厄尔尼诺--拉尼娜现象的循环造成了全球气温的巨大年际变化，当把5年或十年的气温平均看，我们就会发现全球变暖的趋势有增无减。"
"When we average temperature over five or ten years to minimise that variability, we find global warming is continuing unabated," Hansen concluded.
“人们通常关注年平均温度，这个数值可以给年份排序，但是这种排序经常没有意义”，GISS所长 JamsHansen说道 "热带厄尔尼诺--拉尼娜现象的循环造成了全球气温的巨大年际变化，当把5年或十年的气温平均看，我们就会发现全球变暖的趋势有增无减。"
"When we average temperature over five or ten years to minimise that variability, we find global warming is continuing unabated," Hansen concluded.
应用推荐