In accordance with field investigation to epidemic dynamics of wheat scab,the forecast method for differential equations of epidemic state has been given respectively.

對小麥赤霉病流行資料進行分析，給出了流行狀態(tài)微分方程的預(yù)測方法91免费久久精品。

Based on the Malthus and Weibull differential equations of epidemic state,the cybernetic models of epidemic dynamics of wheat scab were developed according to the extreme value principle,and the optimum control trajectories were given.

根據(jù)不同的狀態(tài)微分方程，以極大值原理建立小麥赤霉病流行動態(tài)的控制論模型，得到流行動態(tài)的最優(yōu)控制軌線操欧美老女人的大肥逼。

The results showed that the temperature had the tendency of increasing in these regions; the rainfall, raining days and relative humidity had no significant changes; the index of K was over 0 in most areas, that is, the possibility of wheat scab occurrence will be increased year by year.

結(jié)果表明，冀京津區(qū)域氣溫有增加趨勢优物美女在线观看，有利于小麥赤霉病的發(fā)生流行久久激情精品视频；冀京津區(qū)域降雨量、降雨日數(shù)在线播放免费人成视频网站v片、相對濕度等氣象因子未表現(xiàn)出明顯的變化神马播播岛热岛私人影院；大部分地區(qū)K指數(shù)大于0欧美4438，即春季小麥赤霉病發(fā)生流行的可能性逐年加大。

There is no risk of infection from this virus from consumption of well-cooked pork and pork products.

全球約200萬人因流感死亡亚洲欧美日韩精品视频一区。1968-1969年流感大流行(香港流感 H3N2)始于我國廣東和香港地區(qū)香蕉香蕉国产片一级一级毛片，是20世紀危害最小的一次流感大流行。

Silk fabrics are my company's other leading products, we have adopted advanced technology and equipment, production of silk products, so that fabric is not only in the comfort of self-manifestation of the trend of the times, and both the noble quality of silk fabrics and ornate style, very land of silk fabrics enhance the comfort of wearing, machine washable and wearability have gradually at high-grade underwear, bathing suits, dress, leisure clothes and so on are widely used in various fields, becoming the latest popular international market taking a popular fabric.

絲綢面料是我公司的另一主導(dǎo)產(chǎn)品亚洲小说图片激情文学，我們采用先進的技術(shù)和設(shè)備午夜啪啪啪大片，生產(chǎn)各種絲綢類產(chǎn)品，使面料不僅符合舒適體現(xiàn)自我的時代潮流国产美女破处自拍，而且兼具真絲織物的高貴品質(zhì)和華麗風采日本619视频网站www，極大地提高了真絲織物的穿著舒適性、機可洗性和服用性能超碰在线最新地址，已逐漸在高檔內(nèi)衣伊人中文字幕中文无码、泳服、禮服日本黄页网、休閑服飾等各領(lǐng)域被廣泛應(yīng)用色哟哟一区二区，成為國際市場最新流行的一種流行服用面料。

Pop-music, pop-culture, come to this step?

流行音樂乱伦国产视频。流行文化色在线,com。走到這般地步無法進入。

Ragtime is not a "time" in the same sense that march time is 2/4 meter and waltz time is 3/4 meter; it is rather a musical genre that uses an effect that can be applied to any meter.

Ragtime介紹了一種流行于美國十九世紀左右名為ragtime的音樂亚洲午夜理伦片，能夠表現(xiàn)年青人的活力之類的黄页网站大全手机在线观看，此樂流行是由于piano的關(guān)系，因為兩者真是太搭配了日本乱子视频在线播放。

Through the extensive research on consumer market of leisurewear,it analyzed the market opportunities that sports fashion brought to clothing industry as well as the guidance quality for clothing consumer market.

以新的視角審視服飾的流行国产呦系列合集1000部，分析了運動時尚的大眾化與人們著裝理念及消費形態(tài)的變化，揭示了運動時尚對服飾流行的深刻影響與驅(qū)動機制自拍偷拍h，以及對服裝科技發(fā)展與創(chuàng)新的巨大推動作用亚洲欧美日本A∨在线观看。

But as someone who came to artistic age in the heroic period of Abstract Expressionism, when decisions for or against The Image were fraught with an almost religious agony, the crass and casual use of tacky images by the new artists seemed irreverent and juvenile.

流行藝術(shù)家利用流行的和商業(yè)的標志，以及沃霍爾為坎貝爾公司的湯罐頭畫的那些肖像家喻戶曉日本特级黄色一区二区三区，我對此當然是很熟悉的免费国产乱伦不卡。

Gold: hey Gold: 38 ----( long cavity ------ popular front-line Note) Gold: 38 ----( repeat ------ popular front-line Note) Zhao: to!

金：哎 金：38號————（長腔------流行前線注）金：38號————（重復(fù)------流行前線注）趙：到！