Metals and other substances that allow the motion of electric charge through them are called conductors . 金属和其他容许电荷在其中迁移的材料叫做导体。
As they all migrated in a body together, their mutual relations will not have been much disturbed . 又因为是集体的迁移，它们的相互关系也没有十分变动。
The spectrum indicates that a polyethylene-like species has migrated to the surface of the elastomer . 该光谱表明，聚乙稀类物已经迁移到人造橡胶的表面。
Cheniers have a parallel, gently arcuate alignment reflecting the migratory history of the shoreline . 沙脊呈平行的、微弓形排列，这能反映滨线迁移的历史。
The specificity of the hydrogen migration has been demonstrated through the use of deuterated compounds . 这种特殊的氢原子迁移，已经用氘化化合物予以证实。
They moved seasonally among various vegetation types to feed on plants that were flourishing . 它们还随着季节的变化而在各种类型植物之间迁移，以便吃那些茂盛的植物。
At first brown attributed the motion to a mobility possessed by the pollen grains by virtue of their animate nature . 起初，布朗把这种运动归结为由花粉生物性质所决定的迁移过程。
Only a few years ago, rural-urban migration was viewed favorably in the economic development literature . 几年前，人口从农村向城市的迁移在发展经济学文献中被认为是令人振奋的现象。
Major changes in a river course result in both lateral shifts of the old meander belt and in the development of new belts . 河道中大的变动，造成老河曲带的侧向迁移和新河曲带的产生。
