向量子空间和

The intensity of NP peak of type-Ⅱ initailly increased with the increase of the excitation power and decreased thereafter. This is due to the electrons and the holes were localized in different space of typ-Ⅱ QW, then the band bending occurs when the carrier concentration increases with the power, NP peak shft to high energy. The electron transited to relaxed Si〓Ge〓 layer and combined with the localized holes radiatively.

型量子阱的NP峰随激发功率增加先增加后减小，这是由于在Ⅱ型量子阱中电子和空穴不在空间同一位置，较强激发功率下产生的高浓度载流子引起能带弯曲严重，NP峰向高能方向移动，到某一定程度时开始出现电子跃迁至弛豫Si〓Ge〓层与其中的空穴复合发光。

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。