1) Occurrence frequency of acid rain
酸雨发生频率
2) acid rain occur quotiety
酸雨发生率
3) acid rain frequency
酸雨频率
1.
In 2004,the acid rain frequency had reached 90% above.
2004年酸雨频率已达90%以上,pH年均值在4。
2.
We usually use the traditional remnant GM(1,1) model to forecast the acid rain frequency.
目前预测酸雨频率多采用传统的残差GM(1,1)模型 。
3.
With the observed date in ten acid stations of Sichuan in 2007,temporal and spatial distribution of pH in rain,acid rain frequency were analysed.
根据四川省10个酸雨观测站点2007年降水观测数据,对降水pH值、酸雨频率的时空分布特征进行了分析。
4) frequency of acid rain
酸雨频率
1.
The average level of acid rain is increasing every year, the PH and frequency of acid rain have obviously relationship with season or month switching.
本文利用2003~2008年北京地区三个酸雨观测站(观象台、昌平、上甸子)的酸雨观测资料并结合探空及大气成分资料,分析了近年来北京地区的酸雨变化特征,研究了不同气象条件和大气污染物对降水pH值及酸雨频率的影响。
5) Frequency
[英]['fri:kwənsi] [美]['frikwənsɪ]
发生频率
1.
The Frequency of Late Frost Injury and Its Preventing Method in Wheat Planted Area in Huanghuai;
黄淮麦区晚霜冻发生频率及防御措施
2.
Influence of landscapes on the frequency and intensity of urban heat island;
功能区对热岛发生频率及其强度的影响
3.
Frequency of hypoglycemia in the elder with insulin-treated type 2 diabetes;
老年2型糖尿病患者胰岛素治疗后低血糖症发生频率的观察
补充资料：频率计量(见时间频率计量)
频率计量(见时间频率计量)
frequency metrology: see time and frequency metrology
口n IQ liliang顷率频率计皿(f比quency metrolo盯) 计t。见时闰
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条