质的

The performance of AC variable speed drive system has been improved greatly since field-oriented control is applied.

矢量控制使交流调速系统的性能产生了质的飞跃。

The participants were twenty-two children and their parents from the Elephant Class of Ha-Ha kindergarten, and methods of research is basically qualitative, including video recording, tape-recording, and observing teaching process.

本研究以哈哈附幼大象班二十二名幼儿、家长及研究者本身为研究对象，以录影、录音、访谈及教学观察与省思纪录的方式，进行质的研究。

The area of the ventral tegmentum medial to the substantia nigra; it contains the cell bodies of many of the neurons that compose the mesotelencephalic dopamine system.

为腹内侧盖膜到黑质的区域；它包括许多神经元的细胞体，组成 mesotelencephalic 多巴胺系统。

When the temperature gradient and the magnetic field gradient are in the same direction, the heat transfer can be strengthened.

磁场与温度场和浓度场之间的方向协同良好时，能起到强化氨水吸收过程中传热传质的作用。

TEOS was used as the silica source for the preparation of sol-gel.

本研究并探讨制备程序中膜厚的控制及薄膜表面改质的方法。

Thermal conduction, thermal convection and thermal radiation;(3) the basic theory and

热传质的基本理论和研究方法去分析、解决实际工程问题的能力，为学习一系列

It is found that the performance of the cryocooler has relation with the thermodynamic properties of the working fluid.

结果发现，脉管制冷机的性能与其工质的热物性有很大关系。

At the early stage of 〓 incubation, the mitochondrias were hyperplasia and swelling. After that the mitochondrias became vacuolation.

砷剂孵育早期即可见线粒体增生和肿胀，线粒体的改变早于细胞核染色质的变化。

We have qualitatively leapt over the traditional warehousing and transportation in aspects of function, client relationship, referred range, competition edge, core competence and vendee value.

在服务功能、客户关系、涉及范围、竞争优势、核心能力以及买方价值等方面，与传统的仓储与运输有质的飞跃。

The origin of the vertebrates is one of the most important transitions in animal evolution.

脊椎动物的出现是动物进化历史上一次质的飞跃。

We have no common name for a mime of Sophron or Xenarchus and a Socratic Conversation; and we should still be without one even if the imitation in the two instances were in trimeters or elegiacs or some other kind of verse--though it is the way with people to tack on 'poet' to the name of a metre, and talk of elegiac-poets and epic-poets, thinking that they call them poets not by reason of the imitative nature of their work, but indiscriminately by reason of the metre they write in.

索夫农 、森那库斯和苏格拉底式的对话采用的模仿没有一个公共的名称；三音步诗、挽歌体或其他类型的诗的模仿也没有——人们把&诗人&这一名词和格律名称结合到一起，称之为挽歌体诗人或者史诗诗人，他们被称为诗人，似乎只是因为遵守格律写作，而非他们作品的模仿本质。

The relationship between communicative competence and grammar teaching should be that of the ends and the means.

交际能力和语法的关系应该是目标与途径的关系。