surface deficiency的意思|示意

But the fact that the excess bariums are responsible for electron emission may be reconciled with the deficiency of alkaline earth metals during life by the dynamical surface emission center model.

然而超额钡仍然是发射电子的泉源，可以通过动态表面发射中心模型而与寿命中碱土金属下降统一起来。

This paper analyses, in terms of the kernel sentence and surface meaning, translation of long sentences in scientific English, as well as the deficiency of the kernel sentence in translation.

本文从核心句和表层意义来理解科技英语中的长句翻译，并分析了核心句在翻译过程中的缺点。

Any severe deficiency of welding seams surface like cracks, pores, slags is forbidden.

焊缝表面不得有裂纹，气孔，夹渣等严重缺陷。