This paper studied four pretreatment methods by adding three different retention time organochlorine pesticides(α-BHC激情另类文学、Dieldrin国产欧美精品综合区、pp′-DDT) to fish sample and making different concentration(0.01wdi5.com、0.1日韩欧美偷拍一区二区三区、1),then using GC-ECD determinate its recoveries.

研究了用氣相色譜——電子捕俘器法測定魚肉中有機(jī)氯農(nóng)藥的四種不同前處理方法欧洲A片短视频。通過向魚樣中加入三種不同保留時(shí)間的有機(jī)氯農(nóng)藥(α—六氯苯久久免费妇女高潮看片A片、狄氏劑、滴滴涕)可以手机在线观看黄色网站，并測定三種不同濃度(0.01亚洲爱爱小视频、0.1色哟哟无码一区二区、1)時(shí)加標(biāo)回收率。

The obvious reason for this is the retention of industrial effluents.

其明顯的理由是精品日韩中文字幕，生物降解工業(yè)廢水必須有足夠的停留時(shí)間亚洲网在线。

Based on ion exchange equilibrium,the influence of eluant concentration and resin capacity on adjusted retention volumes was examined.

導(dǎo)出了測定離子交換反應(yīng)熱的方程，測定了在碳酸鈉溶液中在季銨二型強(qiáng)堿性陰離子交換樹脂上F－一级a毛片水多视频国产一、Cl－三级网站午夜三级60分、NO－2、HPO42－www.xxxxx、Br－国产区一区二区三区性色、NO－3和SO42－的離子交換反應(yīng)熱。

The effect of DL-malic acid concentration, methanol concentration, flow-rate of eluent and temperature on the retention time was studied.

研究了DL-蘋果酸濃度亚洲桃色AV无码、甲醇濃度超碰免费在线公开视、流速和溫度對各離子保留時(shí)間的影響。

Mmol/L benzoic acid was used as eluent. The effect of benzoic acid concentration, pH value on the retention time was studied.

實(shí)驗(yàn)過程中国模AV偷拍，對流動相組成国产色福利影院，流動相pH值變化對各種有機(jī)酸保留時(shí)間的影響作了詳細(xì)的探討。

Separation effect and retention time of organic acids could be improved byreducing pH values of the eluent and column temperature.

降低流動相的pH爱爱视频在哪里考，可有效抑制有機(jī)酸分子的解離天堂视频网站，延長保留時(shí)間，提高有機(jī)酸的分離效果黑人一级婬片A片免费无码，但流動相的pH不應(yīng)低于2.0jizzg，否則會導(dǎo)致色譜柱填料的水解，損壞色譜柱古装观看一级古装A片。

Here based on improvement of references 1-2, we discuss the determination of the optimal retention in the mixture of quota share and excess of loss treaties reinsurance.

本文主要通過改進(jìn)文獻(xiàn)[1][2]的方法超碰碰人人摸97，討論超額賠款再保險(xiǎn)以及成數(shù)超額賠款混合再保險(xiǎn)中最優(yōu)自留額的確定問題。

Firstly, talk about the basic concept and characteristic of classical insurance, secondly we discussed the determination of optimal retention in excess-loss reinsurance.

本文在介紹了再保險(xiǎn)領(lǐng)域內(nèi)的一個(gè)傳統(tǒng)險(xiǎn)種的基本概念网站欧美黄色免费、特點(diǎn)的基礎(chǔ)上亚洲中文久久精品无码，討論了超額損失再保險(xiǎn)中最優(yōu)自留額的確定問題。

Part of program-controlled automatic traps (square design, automatic control) CBS-A 358 × 345 × 250 in vitro collection: 100, the maximum capacity of each: 12ml timing range: 1 second -9999 seconds, choose a sub--- 9999 points, arbitrary choice movement: a programmable control program number: 10 in vitro disk: Optional, 16/36/100/169, free combination (matching A disc-type tube can be resistant to organic solution)(L-type matching in vitro expansion of the collection plate may be) power-off function to preserve data and programs, retention time: Ten years characteristics: square design, XY movement, high-precision liquid crystal display a blue screen, the whole operation of the Chinese menu.

程控全自動部份收集器 CBS-A 358×345×250 收集試管：100支wwwwww.日本，每支最大容量：12ml 定時(shí)范圍：1秒—9999秒久久久精品中文字幕加勒比，任意選擇 1分—9999分，任意選擇移動方式：可編程控制程序數(shù)：10個(gè)試管盤：可選配多人群p视频免费观看，16/36/100/169在线网址免费观看av，自由組合（選配A型試管盤可耐有機(jī)溶液）（選配L型試管盤可擴(kuò)容收集）斷電數(shù)據(jù)和程序保存功能，保存時(shí)間：十年特點(diǎn)：方型設(shè)計(jì)思思热99视频，X-Y移動方式亚洲一区二区三区四区五区免费在线观看视频，高精度液晶藍(lán)屏顯示，全中文菜單操作人人在线人人操九。

Program-controlled part of the collection of fully automatic multi-function devices (square design, automatic control)(blue screen of liquid crystal display)(the whole operation of the Chinese menu) CBS-B 358 × 345 × 250 in vitro collection: 100, the maximum capacity of each: 12ml Timing range:-9999 seconds 1 seconds choose 1 -9999 arbitrary selection drops sub-range: 1 drop -9999 peak drops the scope of arbitrary selection choose :0-1000mv movement: programmable control program number: 10 in vitro disk: Optional, 16/36/100/169, free combination (SP-36L type matching in vitro expansion of the collection plate may be) power-off function to preserve data and programs, retention time: Ten years characteristics: CBS -B than the CBS-A is more applicable to high-end laboratory.

程控多功能全自動部份收集器方型設(shè)計(jì)粗暴大黑鳮巴视频欧美图片，自動對管） CBS-B 358×345×250 收集試管：100支人妻一区二区三区,亚洲一级性生活视频，每支最大容量：12ml 定時(shí)范圍：1秒—9999秒任意選擇 1分—9999分任意選擇定滴范圍：1滴—9999滴任意選擇定峰范圍：0-1000mv 任意選擇移動方式：可編程控制(帶廢液槽程序數(shù)：10個(gè)試管盤：可選配，16/36/100/169欧美性色生活片在线观看视频，自由組合（選配SP-36L型試管盤可擴(kuò)容收集）斷電數(shù)據(jù)和程序保存功能91精品国产自产在线观看直，保存時(shí)間：十年特點(diǎn)：CBS-B比CBS-A更適用于高端實(shí)驗(yàn)室。