To explore the application of capillary gas chromatography in the determination of dicyclopentadiene in the Air.

目的 探討以毛細(xì)管氣相色譜法測定工作場所空氣中的二聚環(huán)戊二烯日本特级永久黄色网站?。

Objective To explore the two methods in detecting the D-dipolymer and compare whether the two results being conformable.

目的 探討二種方法對同一標(biāo)本D-二聚體的測定結(jié)果是否具有可比性。

After basis set superposition error and zero-point vibration energy correction, it is found that the most stable dimer and trimer have strong hydrogen bonding interaction with –48.52 and –72.15 kJ/mol.

經(jīng)基組重疊誤差和零點振動能校正后日韩欧美性爱啪啪网，最穩(wěn)定的二聚體和三聚體的相互作用能分別為-48.52和-72.15 kJ/mol最新黄视频网站。

The acetated and hydrogenated urushiol dimer has been separated,and studied by hetero-J resolved 2D-NMR,homo- and heteronuclearchemical shift correlation 2D-NMR and long-range coupled chemicalshift correlation 2D-NMR.The results show that the urushiol dimerare most diphenyl and alkyl phenyl ether structures.Furthermore,IR and MS data also has conformed this structures.

本文將酶催化預(yù)聚后的生漆，催化加氫后国产精品国产AV永久入口久久久，乙酰酯化，再進行離心旋轉(zhuǎn)薄層層析日韩精品草草视频在线播放，分離得到二聚體主要組分人人操人人看人人干人人爽，用異核J分辨譜，同核化學(xué)位移相關(guān)精品免费观看视频在线，異核化學(xué)位移相關(guān)欧美精品视频在线观看免费，遠程偶合異核化學(xué)位移相關(guān)等2D—NMR技術(shù)，全面研究了其結(jié)構(gòu)黄色动图视频，得到了聯(lián)苯型和烷基芳醚型聚合結(jié)構(gòu)的結(jié)論一级a爱视频免费网站aaa。

Objective To evaluate the biocompatibility of poly (lactic acid/glycolic acid/asparagic acid-co-polyethylene glycol) tri-block copolymer in vitro.

目的 對自主研制的三嵌段骨基質(zhì)材料－聚丙交酯／乙交酯／天冬氨酸－聚乙二醇的體外生物相容性進行評價。

In this paper, the performance of polyamide modified by dimeric fatty acid, and the application study in synthesizing binder used for printing ink prepared from this kind of polyamide resin.

本文主要介紹了二聚酸基聚酰胺樹脂的特性欧美日韩国产精东，及其在油墨連接料合成中的應(yīng)用研究成年WWXX视频在线观看，并展望了其發(fā)展前景。

Compound 4 exhibits an unusual 2-D (4,6)-lattice-type network constructed by the [Co222]2- dimers and [Co(H2O)2]2+ units. As for Compound 5, four basic units link to each other form an approximately parallelogrammic pore, which constructed a 2-D covalent bond double-layers network.

化合物4展現(xiàn)出由[Co_2_2_2]~(2-)二聚體和[Co(H_2O)_2]~(2+)組成的具有4影音先锋在线观看日韩AV、6兩種格子的不同尋常的二維網(wǎng)狀結(jié)構(gòu)日韩天天天添日日，化合物5以類平行四邊形孔道為基本單元構(gòu)筑了二維共價鍵網(wǎng)絡(luò)結(jié)構(gòu)。

BR is embedded in the purple membrane and organized in trimeric unit arranged in a hexagonal twodimensional crystalline lattice, there are about 30 lipid molecules surrounding a BR trimer.

BR分子在紫膜中以三聚體的形式存在国产91久久久久久，并形成二維的六角型晶格很黄的视频网站，每個三聚體周圍約有30個脂質(zhì)分子。

These amorphized phases are composed of the dimers and polymers packing densely and randomly.

這些壓致非晶態(tài)是由堆積緊密色色综合网址、取向無序的二聚體或多聚體所組成的国产精选污视频在线观看。

Like all of the biologically importantclasses of compounds, carbohydrates can be monomers, dimers, orpolymers.

像所有的生物重要化合物的種類如：碳水化合物，單體A片一本污码，二聚體精选免费视频，或者聚合體。