查询词典 deficient

A novel efficient procedure has been developed for the conjugate addition of amines to electron deficient alkenes.

提供了一种新型高效的催化缺电子烯与胺类的共扼加成的反应体系。

The results showed that the catalyst was very efficient for the conjugate addition of amines to electron deficient alkenes with excellent yields in several minutes.

在进一步的催化反应过程中发现，该催化剂对反应具有很高的催化活性，能催化该反应在短短数分钟内完成。

Synthetic methodologies derived from electron-deficient alkynes studied by our group in recent 15 years are described.

对十五年来本小组所研究的从贫电子炔烃出发的合成方法学进行回顾，分四方面加以叙述。

The differences of capability enrichment in potassium were very significant between different species of grain amaranths grown on deficient potassium soil after 60 days of seeding and in water culture after transplanting 30 days.

中文题名籽粒苋富钾营养机理研究副题名外文题名 The nutrition mechanism of grain amaranth enrichment in potassium 论文作者李廷轩导师马国瑞学科专业植物营养学研究领域\研究方向学位级别博士学位授予单位浙江大学学位授予日期2003 论文页码总数126页关键词钾营养植物营养富钾基因型籽粒苋馆藏号BSLW /2003 /Q949 /47 1。

Does it not make sense to intervene earlier – before pregnancy – in certain high-risk women with anatomically altered or deficient cervices and/or with previous failures of conventional vaginal cerclages for cervical incompetence?

对某些有解剖学异常、宫颈缺陷和/或曾因宫颈机能不全行常规阴道环扎术失败的高危妇女，是否可以提前干预，即在孕前行子宫颈环扎术？

But mostfermented chilis produced in industrialization were dull and deficient as a result ofadoption of new process.

而现代工业化生产的发酵辣椒因一些新工艺的采用，导致其风味平淡，香气不足。

Interestingly, many of these attitudes, including the belief that Creoles are abnormal and deficient languages, find analogues in scholarly texts from the past three centuries.

有趣的是，许多说克理奥尔语的人的看法，包含克理奥尔语是反常而有缺陷的语言的看法，过去三世纪以来，在类似学术的文本里发现类似之处。

The requirements and possibility for production of short-lived, neutron deficient radionuclides, for fast neutron therapy and activation analysis using cyclotrons are discussed briefly.

用回旋加速器来生产核医学所需的短寿命、缺中子同位素；用作为快中子治癌的中子源和用作活化分析工具，是回旋加速器在核医学领域中应用的主要方面。

The therapeutic effects of the four decoctions administered with clinical dosage in the blood??deficient mice are not different from each other.

4种方法中以机器煎煮法的疗效最为显著；但是，在临床常用量条件下，4种方法制备汤剂的疗效未呈现差别。

The dietetical behavior of children in ADHD group was unreasonable, and the capability of movement was deficient.

ADHD组儿童饮食行为不合理，运动能力不足。

Since historical times,England ,where the early inhabitants were Celts, has been conquered three times .

从有历史以来，英国，在此地早期居住的是凯尔特人，已经被征服了三次。

Bluetooth OBEX File Transfer Enables the sending and receiving of files on your phone via Bluetooth.

蓝牙OBEX文件移动允许经过蓝牙传送和接受文件。。。。