We try to obtain the common-base current gain a of the parasitic PNP transistor from the eloping profile of the collector region including the effect of buried-layer.
本文从包括埋层影响的集区杂质分布出发，求出了寄生PNP晶体管的共基极电流放大系数。
The current teaching material system for common physics experiment in our country can be generally classified into two kinds, which base on different subjects and levels respectively.
我国现有的普通物理实验教材体系大致可分为分学科的普通物理实验教材体系和分层次的普通物理实验教材体系两类。
LTD is willing to work overseas customers, a common base of the current and future.
正德围巾有限公司愿携手海内外客户，共同立足于当下，展望未来。
LTD is willing to work overseas customers, a common base of the current and future.
正德围巾有限公司愿携手海内外客户，共同立足于当下，展望未来。
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