各种姿势玩小处雏女视频,精品三级国产在线看,未满小14洗澡无码视频网站,seerx性欧美巨大,中国熟妇毛多多裸交视频,人妻精品一区二区,wwwxxx国产,国产乱码一区二区免费

儀器網(yiqi.com)歡迎您!

| 注冊2 登錄
網站首頁-資訊-專題- 微頭條-話題-產品- 品牌庫-搜索-供應商- 展會-招標-采購- 社區-知識-技術-資料庫-方案-產品庫- 視頻

應用方案

儀器網/ 應用方案/ Whitepaper_Pipettes_Eppendorf-PhysioCare_eng

立即掃碼咨詢

聯系方式:400-820-2559

聯系我們時請說明在儀器網(www.xlh123.com)上看到的!

掃    碼    分   享

In a study by Bj?rksten et al. 1994 [1], approximately 60 %of female laboratory technicians who pipetted more than300 hours per year, reported hand ailments. Buckle andDavid 1997 [2] reported that approximately 90 % ofparticipants complained of problems in the hand areafollowing continuous pipetting for 60 minutes.The possible health consequences of such strain in thelaboratory are obvious. 

相關產品

參與評論

全部評論(0條)

推薦方案

在線留言

上傳文檔或圖片,大小不超過10M
換一張?
取消