母体

Piperidine oxoammonium salts oxidize aromatic amines and N, S-containing heterocycles to the corresponding radical cations, and the isotope effects in electron transfer reactions between thianthrene and N-methylphenothiazine radical cations and their respective neutral parent molecules have been reported for the first time.

啶氧铵盐氧化芳95胺和含氮、硫芳杂环为相应的自由基正离子，首次报道了及甲基吩自由基正离子与其中性母体之间电子转移的同位素效应。

Piperidine oxoammonium salts oxidize aromatic amines and N, S-containing heterocycles to the corresponding radical cations, and the isotope effects in electron transfer reactions between thianthrene and N-methylphenothiazine radical cations and their respective neutral parent molecules have been reported for the first time.

哌啶氧铵盐氧化芳香胺和含氮、硫芳杂环为相应的自由基正离子，首次报道了噻蒽及甲基吩噻嗪自由基正离子与其中性母体之间电子转移的同位素效应。

Such rapid orbits mean the planets in question are close to their parent stars, and thus likely to be tidally locked.

如此快速的运行轨道意味着被观测的行星离它们的母体恒星很近，也就是说很有可能出现潮汐锁定的现象。

Isolated plant cells have totipotency , it can develop into a whole plant. under some isolated conditions, every cell can develop into a whole plant as the same as matrix plant

离体的植物细胞具有发育上的全能性，能够发育成为完整的植物体，在一定培养条件下每个细胞都可发育成一个与母体一样的植株。

The trimeric {[Ag_2]_3}~(3+) cluster in compound 2 are rarely to extend into a three-dimensional supramolecular network.

Hill等人的最近研究结果表明，将Ag~+和多酸结合得到的物种比多酸母体的催化性能更好。

Boys born with undescended testicles are 60 percent more likely than other boys to be infertile when they grow up. Furthermore, the researchers beliee that poor testicular deelopment in the uterus may lead to later fertility problems een in boys who don't show the genital abnormality at birth.

伴有阴睾的男孩长大后比其他男性多60%可能性患不育症，还发现，在母体子宫内双侧睾丸发育不良的男性会导致长大后不育，即使他们出生时无外生殖器异常。

Sample statistics based on weighted data are more representative of the population parameters than unweighted data in terms of some demographic characteristics.

加权后的资料在人口学变项上比未加权资料较为接近母体参数，因此加权似乎是一个合理处理样本资料的做法。

Sample statistics based on weighted data are more representative of the population parameters than unweighted data in terms of some demographic characteristics.

在加权前也必需提出事后操弄资料的理由，而不是将加权视为理所当然。本文以台湾选举与民主化调查为例，首先说明加权后的资料不必然较接近母体参数的原因。

In order to search for new types of highly active and low toxic pesticides, we considered alternaric acid as a lead compound and considered 5, 6-dihydro-2H-pyran2, 4-diones as a patent structure, designed and synthesized seven series of 5, 6-dihydro2H-pyran-2, 4-diones derivatives, tested their fungicidal, herbicidal and tobacco virucidal activities.

为了寻找高效低毒的农药品种，以交链孢酸为先导化合物，以5，6-二氢-6-烷基-2H-吡喃-2，4-二酮的结构为母体结构，设计并合成了七个系列的2，4-吡喃二酮化合物，用〓H NMR、〓C NMR、质谱和元素分析证明了其结构，并测试了部分化合物的杀菌、除草和抗烟叶病毒的活性。

Vivipary The germination of seeds or spores that are still attached to the parent plant.

胎生：种子或孢子未脱离母体前就开始发育生长。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失