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目的:应用高效液相色谱技术建立驱蚊膏中避蚊胺含量的测定方法. 方法:采用Alltima C18色谱柱(150mm×4.6mm,5μm),以甲醇-水(65:35,v/v)为流动相,流速0.8mL·min-1,检测波长210nm. 结果:在本方法中,避蚊胺的线性关系良好,线性相关系数(r)为0.9999;精密度和稳定性良好,相对标准偏差(RSD)分别为0.05%和0.18...
Clayey silt reservoirs bearing natural gas hydrates(NGH)are considered to be the hydrate-bearing reservoirs that boast the highest reserves but tend to be the most difficult to exploit.They are proved to be exploitable by the first NGH production test conducted in the South China Sea in 2017.Ba...
gua peng xian feng xi cao ping gan Zhe ()()xiu tong lou ti wa an jiang you beng ()()())pu bu nong yan dou peng shuai zui chun ()()6. tian Jing ying kang kai gong xian bao guo ()()()()lan yong he'ǎikuang chan ydo lan mu du ()()()()yua...
(wei feng lin lin dai tou dai bie chu xin cai gao yi chou /da bu liu xing bao lu wu yi niannian you wang hu suo yi man shen mi mo ce die die zhuang zhuang qian jun yi fa /))xiong yong peng pai JIng rou tiao ran er zhi zi zuo zi shou )(tan te b...
Shuang-Nan Zhang; TiPei Li; FangJun Lu; LiMing Song; YuPeng X u; CongZhan Liu; Yong Chen; XueLei Cao; QingCui Bu; Zhi Chang; Gang Chen; Li Chen; TianXiang Chen; YiBao Chen; YuPeng Chen; Wei Cui; WeiWei Cui; JingKang Deng; YongWei Dong; Yuan Yuan Du; MinXue Fu; Guan...
Peng Du;Lin He;Wen Hou;Yi-Qiao Dong;Jian Li;Guang-Wei Li;Shuang Li;Jing Song;Yuan Tian;Meng-Xin Wang;Yong-Hui Hou;Zhi-Ying Huo;Hong-Zhuan Hu;Ning-Sheng Hu;Zhong-Wen Hu;Lei Jia;Fang-Hua Jiang;Xiang Jiang;Zi-Bo Jiang;Ge Jin;Ai-Hua Li;Qi Li;Yin-Dun Mao;Zheng-Hong Tang;Q...
微量元素锡对不锈钢中夹杂物形成的影响研究 摘要
xia mian de xiao peng you shui ying gai de dao jiang li yongbiao一、下面的小朋友,谁应该得到奖励?用“”表shi示。ding ding zai shang ke shi jian he tong zhuo do nao1.丁丁在上课时间和同桌打闹。xiao xiao fu qi le shuai dao zai di de xiao peng you2.笑笑扶起了摔倒在地的小朋友。wo ...