Because of fluoride substitutions and quinoxaline structures, two new compounds are electron deficient. With alkyl substituted fluorenes, the two new compounds both have good solubility.

新的化合物因為含有氟取代基和喹喔啉結構使得整個分子呈缺電子狀態(tài)欧美性交ααα,AAA，同時烷基取代的芴使得材料具有良好的溶解性黄色视频打毛洞黄色视频打毛洞黄色视频。

The above-mentioned compounds display the relative permittivity of around 10~20, the quality factor of around 1000~30000 GHz and the temperature coefficient of resonant frequency of around -9~-100ppm /℃.The compounds are sintered in the temperature range of 700 ~ 1100oC.

以上化合物相對介電系在10~20之間黑人精品视频55，化合物Q×f約為1000 ~ 30000日韩人成精品视频免费播放在线、溫共振系為-9~-100ppm /℃燒結溫均并高在700~1100oC之間。

Finding ways to reposition or repurpose these compounds is a high-growth opportunity due to the relatively low cost compared to developing new compounds.

設法復位或重新安排這些化合物是一個高增長的機會九一国产在线视频免观看，由于相對較低的成本相比欧美十八禁性爱视频，開發(fā)新的化合物。

Preliminary bioassay indicates that some compounds display herbicidal activity and excellent fungicidal activity to some extent, and among them the compounds 5k and 8f exhibit higher than 90% inhibition effect against Rhizoctonia solani in dosage of 50 mg/L.

初步的生物活性測試結果表明久久久久精品妇女999，所合成的化合物均表現(xiàn)出不同程度的除草及殺菌活性国产日韩欧美亚洲精品，其中化合物5k和8f的活性最好，在50mg/L濃度下對水稻紋枯病菌的抑制率達90%以上日韩专区综合第二页。

The content of the volatile compounds reaches highest at 6 months and then decreases. The contents of volatile compounds in M. semimembranosus and M.

而揮發(fā)性化合物的含量在6個月達到最高值半膜肌和股二頭肌干物質(zhì)中分別為9240.16μg壬烷·100g~(-1和13227.85 μg壬烷·100g~(-1)亚洲国产欧洲中文字幕，然后含量下降。

The re-sults showed that 47 volatile compounds were totally identified, of which monoterpene and sesquiterpene compounds were the main components.

結果共確認出47種揮發(fā)性成分欧美一级大片久久蜜视频，其中單萜類和倍半萜類化合物為主要組分亚洲视频人人干。

In this paper,the behavioral,physiological, ecological adaption mechanism of H.armigera and H.assulta to their common host plant tobacco were studied comparatively,and the main results were summarized as follows:Electroantennogram response of adult to tobacco volatiles:(1) H.armigera and H.assulta elicited similar EAG responses to the tested 20 tobacco volatiles;both of them elicited significantly more sensitive to green leaf volatiles,aliphatic and aromatic compounds, than to monoterpene,sesquiterpene,heterocyclic compounds under lower concentration; while the similar EAG responses under higher concentration were detected,but most of them were not significantly different with each other.

本文從行為、生理和生態(tài)適應三個方面国产视频精品网，對棉鈴蟲和煙夜蛾與煙草間的互作進行了比較研究成人网站日韩在线视频观看网址，主要結果如下：成蟲對煙草揮發(fā)物的EAG反應：(1)兩種夜蛾對測試的20種煙草揮發(fā)物均可產(chǎn)生EAG反應；低濃度下對綠葉氣味日韩福利午夜免费无码AV、脂肪族又黄又爽又色刺激的视频、芳香族化合物的EAG反應顯著高于單萜類、倍半萜類和雜環(huán)化合物免费黄色在线网站91；高濃度下的EAG反應也表現(xiàn)出相似的總體反應趨勢欧美AAAA激情视频，但多數(shù)反應值間的差異未達顯著水平。

Results: SPME was effective to analyze the flavor substances in Portunus trituberculatus and Squilla Oratoria, 20 and 15 main volatile compounds were identified respectively by comparing their mass spectra with those contained in the NIST mass spectral database; among these compounds most of them were carbonyl and alcohols.

結果：固相微萃取技術有效提取了三疣梭子蟹和口蝦蛄肌肉中的呈味物質(zhì)秋霞717电影，經(jīng)過NIST質(zhì)譜數(shù)據(jù)庫和文獻對照色综合同性人妖无码字幕，分別確定了20種和15種主要呈味物質(zhì)，大多是一些酸類日韩手机色自拍图片小说、酯類亚洲欧美中文字幕你懂的、醛類2021无码影片、醇類等化合物。

They are 30 flavonoids of which 12 are new compounds, six are steroid compounds (2 new sterol), 2 new stilbenes, 2 lignans.

應用光譜和波譜技術鑒定了所有化合物的結構国产成年人网站视频，特別是應用二維核磁共振技術解析了18個新化合物的結構。

Hydrothermal synthesis of Sn-contained complex compounds mostly focuses on the synthesis of sulfur-substitute stibium acid metallic complex compounds.

含銻配合物的水熱溶劑熱合成主要集中在硫代銻酸金屬配合物的合成上人人看人人上人人干。