trihydroxy中文什么意思

發(fā)音:

用"trihydroxy"造句

adj.
【化學(xué)】三羥(基)的。

trihydroxy acetophenone: 三甲氧基苯乙酮
trihydroxy acid: 三羥基酸
trihydroxy alcolhol: 三元醇
trihydroxy benzene: 三羥基苯
trihydroxy estrane: 雌烷三醇

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例句與用法

Methods pinocembrin and its derivatives were synthesized with 2 , 4 , 6 - trihydroxy - phenylethanone as the starting material via four steps including protection of the hydroxy - group , condensation , cyclization and deprotection
方法以2 , 4 , 6 -三羥基苯乙酮為起始原料，經(jīng)羥基保護(hù)、縮合、環(huán)化、脫保護(hù)合成目標(biāo)化合物。
At the surface of the pollen grains there are three types of aperturates , including three porates type , three colpates type and three porate - colpates type ; and four types of sculpture , namely , reticulate , striate , striate - reticulate and verrucate . the upper epidermal cells of the leaves of 12 species plants are detected with hpias - 1000 image analytic system through the treatment of binarization , and the experimental methods are proved stable . the results indicated that the waviness of the anticlinal walls ( sfc ) and the ratio of the feret ' s diameter ( slf ) of the epidermal cells of the middle lamina in the third node of leaves starting from the lowerest part of the stem have a relative constant range and could distinguish from each other . oieanolic acid , l , 5 , 8 - trihydroxy - 3 - methoxyxanthone and swertiamarin are separately detected on the tlc , and the different chromatogram of various plants can be considered as characters of identification . the contents of oleanolic acid in 12 species of plants are determinated by hplc , but among the different plants and botanical organs their contents are different , and the highest content in flowers
本文對川鄂產(chǎn)獐牙菜屬藥用植物資源進(jìn)行了野外調(diào)查、標(biāo)本采集和鑒定，對12種干燥藥材的性狀進(jìn)行了描述，提供了可以鑒別的特征。通過掃描電子顯微鏡觀察的12種本屬藥用植物的花粉粒均為單?；ǚ?，萌發(fā)孔有3孔型， 3溝型和3孔溝型三種類型；表面紋飾包括網(wǎng)狀紋，條狀?網(wǎng)狀紋，條狀紋和瘤狀紋四種類型。用hpias ? 1000高清晰度彩色病理圖文分析系統(tǒng)對葉片上表皮細(xì)胞作圖像分析，并進(jìn)行方法學(xué)研究，結(jié)果表明，同種植物莖上第3節(jié)葉片中段主脈和第1側(cè)脈之間葉上表皮細(xì)胞垂周壁彎曲程度sfc值和細(xì)胞縱、橫向直徑的比值slf值，種間有顯著差異，每種都有相對恒定范圍值。
Two kinds of flavonoids in water extracts , water - extraction and alcohol precipitation , alcohol extracts were found by paper chromatography . they were separated and purified by thin - layer chromatography , one of which was primarily identified by uv as 4 " , 5 - dihydroxy - flavonol etherification or 4 " , 5 , 8 - trihydroxy - flavonol etherification
水提物、水提醇沉物、醇提物等3種提取物紙層析結(jié)果顯示有兩種黃酮類化合物，經(jīng)薄層層析分離純化，并進(jìn)行紫外光譜分析，初步測定其中一組分為4 ， 5 -二羥基黃酮醇醚或4 ， 5 ， 8 -三羥基黃酮醇醚。