查询词典 stem

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。

This may cause them to turn the stem backwards or they can choose to get a seat post that is longer and a bike stem that can be raised higher.

这将可能使他们向后转干，也可以选择获得席位的职位，是多了，自行车干细胞，可以提出更高。

One tradition says that if you twist the stem of an apple, assigning a letter of the alphabet to each turn, the stem will break off when you've reached the initial of someone who loves you.

有一个传说是，如果你扭动苹果的梗，每扭动一次代表字母表顺序上的一个字母，在扭动到爱着你的人名字的首字母时，苹果梗就会断掉。

The implant is created by placing the stem cells into an FDA-approed scaffold that mimics the conditions needed to turn stem cells into fat cells.

制造移植物的方法只，将干细胞植入到FDA批准的支架内，模仿干细胞转化成脂肪细胞的条件。

After closing a wedge type gate valve, back up the stem (to 1/4 turn) to allow room for stem expansion.

在关闭楔形闸阀后，后退阀杆（1/8"到1/4"圈），为阀杆膨胀留出空间。

"While preious research has demonstrated that arious types of stem cells can turn into cells that express the proteins consistent with smooth muscle, this is the first study that shows that the cells we generated hae the same functional properties as smooth muscle, as well as express the same proteins," said Jeffrey Ross, Ph.D., research associate at the Stem Cell Institute.

"以前的研究已经证实多种不同类型的干细胞可以被转化成表达与平滑肌细胞相同蛋白的细胞，这个实验首次显示，我们得到的细胞由于平滑肌相同的特性，表达一样的蛋白，"干细胞研究所的研究员Jeffrey Ross博士说。

This article based on the existence of neural stem cells location,source,implantation,repair mechanisms and implantation of neural stem cells in the body′s immune response to research.It is found that neural sten cells in repair of nerve tissue defects and promote functional recovery of the nervous system plays an indispensable role.

本文通过对神经干细胞的存在部位、来源、植入途径、修复机制及植入体内后机体对神经干细胞的免疫反应进行研究概述，发现神经干细胞在修复神经组织缺损、促进神经系统功能恢复方面起到不可或缺的作用。

Method］ The effective components from the stem segment of D. stramonium was extracted with distilled water, and with the treatment with distilled water as CK, the effects of extracted liquid from stem segment of D. stramonium on seed germination and seedling growth of tomato, pepper, amaranth and catnip were studied.

方法］用蒸馏水浸提曼陀罗茎段内的有效成分，以蒸馏水处理为对照，研究曼陀罗茎段浸提液对番茄、辣椒、苋菜、荆芥种子萌发和幼苗生长的影响。

Result］ The extracted liquid from D. stramonium could decrease the germination rates of 4 vegetables and the seed germination of tomato and pepper. After treatment by 0.2, 0.4 g/ml extracted liquid , the seed germination of tomato and pepper were decreased by 10.2％, 9.4％ and 46.7％, 34.7％ than that of CK resp. The extracted liquid at 0.2 g/ml could inhibit the growth of vegetable root, but had some promotion on growth of vegetable stem. The extracted liquid at 0.4 g/ml had the strong inhibition on the growth of vegetable root, but its inhibition on growth of vegetable stem was greatly variable in different species.

结果］曼陀罗浸提液可降低4种蔬菜种子的发芽速率，降低番茄和辣椒种子的发芽率；0.2、0.4 g/ml曼陀罗浸提液处理后，番茄和辣椒种子的发芽率分别比对照降低了10.2％、9.4％和46.7％、34.7％。0.2 g/ml曼陀罗浸提液抑制蔬菜根的生长，而对茎的生长却表现出促进作用；0.4 g/ml曼陀罗浸提液对蔬菜根的生长有很强的抑制作用，对茎段生长的抑制作用因物种不同而有很大差异。

He has to relate with three women in the movie, and yet remain implicitly faithful to the unseen Lucinda.

让克劳德布里亚里成功地饰演试验了一个难度很大的角色：和三个女人打交道，但还要底下对观众未曾谋面的卢馨达保持忠诚。

The experiment was conducted to study effects of inulin on the growth performance, indices of immune organs and serum immunoglobulin of laying chicklings as well as the performance of inulin which replaced the antibiotics in diets by adding 0.2%, 0.4% and 0.8% of inulin, respectively.

试验旨在通过在蛋用雏鸡日粮中添加0.2%、0.4%和0.8%的菊粉，研究菊粉对蛋雏鸡生长性能、免疫器官指数和血清免疫球蛋白的影响，以及菊粉替代抗生素对蛋雏鸡的应用效果。