1) Frequency ratio
频次比
2) frequency distribution model
频次比较
1.
The frequency distribution models, Taylor exponential equation, and Iwao s m -m method are used for analysing the spatial patterns of Castanopsis kawakamii population and its 13 main associated species in Xiaohu, Sanming.
本文应用频次比较、Ｔａｙｌｏｒ指数和Ｉｗａｏ方法全面分析了三明小湖格氏栲种群及其１３个主要伴生树种的空间格局和时序变化规律，揭示了组成天然次生林群落的各优势种群空间格局的成因及种群密度变化对分布的影响。
3) frequency
频次
1.
This paper analyzed the distinguish between total pollutant discharge monitoring and supervise monitoring in the lowed test limit, monitoring frequency, sampling optimization of first pollutant and pollutant over discharge standard Some countermeasures were put forwar
分析了排污总量监测过程中关于最低检出限、一类污染物的采样点位、监测频次、超标污染物等方面与污染源监督监测的区别以及存在的问题 ,并提出了相应的对策和措施。
2.
Objective To observe the frequency of direct nursing categories within 72 hours of admission in major burn patients in order to design nursing training programs and make rational arrangement of nurses.
方法 采用加拿大PRN系统统计 42例大面积烧伤患者入院后2 4、48、72h所接受的直接护理项目频次。
3.
OBJECTIVE: To screen out the Chinese herbs of treating of atypical pneumoina by researching the frequency use of Chinese herbal medicine in the prevention and treatment prescriptions.
结果:在预防和治疗非典型肺炎中药处方中使用频次最高的中药分别是金银花和甘草;均位居前5位的中药有4味,依次是甘草、金银花、黄芪和连翘。
4) Failure times and frequency
故障频次
5) frequency
检出频次
1.
Mean concentrations and frequency of the compounds in drinking water of Jiangsu province,while the concentrations and frequency were determined in three water seasons of aboundence,average and dryness.
文章用化合物的潜在危害指数来指示物质对环境的毒性,结合江苏省饮用水中丰、平、枯三个水期测定出的有机物污染物的检出浓度和检出频次,利用分级、加权法对检出的化合物进行排序,从而筛选出江苏省饮用水中的优先监测污染物。
6) frequency
发生频次
1.
Using the conventional meteorological and anemometer data and the Asian circulation data from 1971 to 2000,as well as the 8-type land use data from 1990 to 2000,an ecological/climatic effect model of sandstorm occurrence frequency and mean duration was established for the spring from March to May in Ningxia region.
利用宁夏1971~2000年常规气象、自记风及同期亚洲环流资料,并结合1990~2000年宁夏八大类土地详查资料,建立了对宁夏中部干旱带春季3~5月份沙尘暴发生频次和平均持续时间拟合效果较好的生态/气候影响分析模型。
2.
Using the conventional meteorological and anemometer data and the Asian circulation data from 1971 to 2000, as well as the 8-type land use data from 1990 to 2000 , an ecological/climatic effect model of sandstorm occurrence frequency and mean duration was established for the spring from March to May in Ningxia region.
利用宁夏1971-2000年常规气象、自记风及同期亚洲环流资料,并结合1990-2000年宁夏8大类土地详查资料,建立了对宁夏中部干旱带春季3-5月沙尘暴发生频次和平均持续时间拟合效果较好的生态/气候影响分析模型。
参考词条
补充资料：频次
1.屡次。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。