查询词典 stem

Rice stem borer; artificial diet; orthogonal design; key factors; rice stem borer resistance to Bt

二化螟；人工饲料；正交试验设计；关键因子；抗Bt品系

In second generation, the result is contrary.4. The results of the two orthogonal designs of artificial diet of rice stem borer both indicate that sucrose and wheat germ flour are key factors of survival days of rice stem borer.

二化螟人工饲料两次正交试验的结果均表明，蔗糖和麦芽粉是影响二化螟幼虫历期的关键因子，水稻茎粉、麦芽粉、酵母粉和稻糠粉是影响二化螟幼虫成活率的关键因子，水稻茎粉是影响二化螟蛹重的关键因子。

The present investigations show that Bt rice possesses high efficiencies for controling rice stem borer, yellow stem borer and rice leaf roller, and there are no significant differences in growth and development of non-target organisms, such as rice planthoppers, leafhoppers and predators, and the stability of arthropod community structure between Bt rice and conventional rice paddy habitats.

现有的研究表明，Bt水稻对二化螟、三化螟和稻纵卷叶螟等主要靶标害虫具有较高的抗性水平，对稻飞虱、叶蝉、捕食性天敌等非靶标生物的生长发育和稻田节肢动物群落的稳定性无明显影响。

Asian stem borer is polyphagic and has 2-3generations on different host plants in one year .whatmore ,the interactions between Asian stem borer and its hosts increase its genetic aberrance .

长期以来，二化螟给我国的水稻生产带来了严重的经济损失。二化螟食性杂，寄主范围广，与众多寄主存在复杂的交互作用使得其遗传差异变大。

I've read this book from stem to stem for three times.

这本书我从头到尾读了三遍。

I have read this book from stem to stem for three times.

这本书我从头到尾读了三遍。

I have read the book three times from stem to stem.

这本书我从头到尾读了三遍。

Phytophthora root and stem rot, caused by Phytophthora sojae, is a prevalent and destructive disease in some soybean-growing regions. The causal fungus overwinters with oospores in soil and causes soybean root and stem rot next year.

在某些大豆生产区，由大豆疫霉菌引起的大豆根茎腐烂病是一种普遍流行的、极具破坏性的病害，病原真菌以卵孢子在土壤中越冬，在条件适宜时导致下一年大豆发生根茎腐烂。

A stem is any morpheme or combination of morphemes to which an inflectional affix can be added.friend- in friends ,and friendship in friendships are both stems.wheares the latter shows that a stem may contain a rot and a derivational affix.

以上是《语言学教程》对词干，词根和词缀方面的解释，可能与原文略有不符，只是对其主要内容的归纳，如果想了解更多内容，诸如关于词缀，词干，词根的定义，以及它们之间的联系与区别，可以查阅其他相关资料。

If 2001 was the year of the embryonic stem cell, 2002 was the adult stem cell's turn.

如果2001年是胚胎干细胞的年代，那2002年就轮到成人干细胞了。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。