Additionary , the cloth for boll rolling that is not clean and touches frequently with the producing tea machinery also adds the Pb content to tea.

針對烏龍茶Pb污染的成因，本文還提出一些控制烏龍茶Pb污染的具體措施日韩丝袜清纯自拍视频。

In 1980s, HFRS additionary occurred in spring season, the diseased cases and the dead cases accounted for 42.78%and 21.73%of that of the whole year respectively, the endemic area expanded to 14 areas where the mixed infection of Hantaan virus and Seoul virus were found. In 1990s, the diseased cases and dead cases were 43.68%and 37.55%of that of the whole year respectively, mixed infection of Hantaan and Seoul virus was found.

結(jié)果表明：山東省在60年代和70年代HFRS發(fā)病以秋冬季（10月～翌年1月）為主免费的日本www视频，其發(fā)病數(shù)占全年發(fā)病數(shù)的89.87％，病死數(shù)占全年的88.99％亚洲人人看a；疫區(qū)限于6個(gè)地區(qū)亚洲欧美日韩国产综合久，疫區(qū)型別為姬鼠型。80年代国产欧美日韩免费影片在线观看，除秋冬季發(fā)病高峰外亚洲色图,清纯唯美，出現(xiàn)春季（3～6月）發(fā)病高峰，其發(fā)病數(shù)和病死數(shù)分別占42.78％和21.73％国产无码大黄网站；疫區(qū)擴(kuò)大至全省14個(gè)地區(qū)婷婷五月激情丁香，疫區(qū)型別為姬鼠型和家鼠型的混合型。90年代情況與80年代類同迷奸黄色网站在线观看，春季發(fā)病與死亡數(shù)分別占全年的43.68％和37.55％黄色网站免费大全高；疫區(qū)型別仍為混合型。