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1)  ice force frequency
冰力频率
1.
Through indoor ice force model experiments, the characteristics of ice force frequency and amplitude are obtained.
通过室内冰力模型试验得出了冰激振动的重要参数———冰力频率、幅值的特性。
2)  ice force power spectra
冰力频谱
1.
The ice force power spectra are derived by the ice force-time curves with the method of Fast Fourier Transfer.
通过快速傅立叶变换方法由所测得的冰力时程曲线得到冰力频谱 ,分析并讨论了冰排速度、锥体结构物的水线直径、锥角以及冰排弯曲破坏方向等对冰力频谱因子的影响。
3)  interference frequency
扰力频率
4)  virulence frequency
毒力频率
1.
The resistance of rice varieties to Magnaporthe grisea was identified and evaluated by the inter-organismal genetics method including the virulence frequency(VF),and the pathogenicity association(PA).
采用生物间遗传学关于毒力频率和联合致病性分析的方法,用67个稻瘟病菌菌株对35个水稻品种的抗瘟性进行了鉴定和评价。
2.
The resistance of hybrid rice combination to rice blast (Magnaporthe grisea) were identified and evaluated by combining the interorganismal genetics method about the virulence frequency (VF), and the analysis of the pathogenicity association (PA) such as resistance association coefficient (RAC) and virulence association coefficient (VAC) with the traditional method of differential cultivars.
用生物间遗传学关于毒力频率和联合致病性分析的方法,结合传统的鉴别寄主方法对广东省部分参加区试杂交稻组合的抗瘟性进行鉴定和评价。
3.
The strains population was virulent to all 30 rice blast monogenic lines,virulence frequency(VF)ranged from 17.
00%;病菌群体对所测定的30个抗瘟基因均表现出毒性,毒力频率为17。
5)  virulent frequency
毒力频率
1.
V2,V5+6,V2+Talent,V2+Mid and V2+6 were lower in virulent frequency,so the resistant genes Pm2,Pro5+6,Pm2+Talent,Pm2+Mid and Pm2+6 could be used as resistant resources of wheat powdery mildew breeding.
经对黑龙江省不同地区小麦白粉病菌毒性结构和毒力频率研究表明,黑龙江省小麦白粉病菌具有基本相同的群体结构,其中V0、V1、V3a、V3b、V3c、V3f、V5、V5(Mli)、V7、V8为黑龙江省小麦白粉病菌的毒性基因,而V2、V5+6、V2+Talent、V2+Mid、V2+6毒力频率较低,因此,与之相对应的抗性基因Pm2、Pm5+6、Pm2+Talent、Pm2+Mid、Pm2+6,可作为黑龙江省抗小麦白粉病育种的抗源。
2.
The best one of the tested cultivars is Xuzhou174 with the virulent frequency of 333%.
抗性最好的品种是徐州174,毒力频率为33 3%,毒力频率低于60%的仅有百农64、徐州8697等7个品种。
3.
The virulent frequency of V1, V3a, V3b, V3c, V5, V7 and V8 were high (more than 50%), but that of V2, V4a, V4b, V2+6 and V21 were low (less than 5%).
小麦白粉菌毒性基因Ｖ１、Ｖ３ａ、Ｖ３ｂ、Ｖ３ｃ、Ｖ５、Ｖ７和Ｖ８毒力频率较高（＞５０％），Ｖ２、Ｖ４ａ、Ｖ４ｂ、Ｖ２＋６和Ｖ２１毒力频率较低（５％），Ｖ３ｆ、Ｖ５＋Ｍ１ｉ、Ｖ６和Ｖ１７毒力频率变化幅度较大（４４％～７４４％）。
6)  buoyancy frequency
浮力频率
1.
An mathematical expression of buoyancy frequency profile in some shallow waters is presented.
给出了一些海区实测浮力频率剖面的数学模型。
2.
Based on the observed data during 1986-1990,the longitudinal variabilities and vertical distributions of buoyancy frequency in the western tropical Pacific Ocean are analyzed to expound the relation of buoyancy frequency to seawater stability and potential energy of oceanic internal wave.
根据实测资料(1986-1990年),分析了热带西太平洋(165°E,10°N～10°S)浮力频率的垂直分布和经向变化,讨论了浮力频率与海水稳定度和海洋内波位能的关系。
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