The results show that backward electron emission yield deviates from inversecosine law, due to the role of the valence electrons of H2 +.
研究发现背向的电子发射产额不满足余弦关系，这是由于H2 +上的价电子所引起的。
2
The inverse function of that restricted cosine function is called the arccosine function.
被限定的余弦函数之反函数叫做反余弦函数。
3
This paper presented an ROM look-up table (LUT) based inverse discrete cosine transform (IDCT) algorithm and its LSI implementation having parallel architecture.