Although the perinuclear space is continuous with the lumen of the endoplasmic reticulum, the fact that some receptors for calcium signaling molecules locate on the nuclear membranes shows that there does exist an independent calcium signaling mechanism in the cell nucleus. 尽管核周隙与内质网的腔相通,核膜上存在钙信号分子的受体等事实表明,细胞核存在一套相对独立的钙信号机制。
The Continuous Phase Frequency Shift Keying ( CPFSK) signaling scheme has been widely used in mobile applications. 连续相位频移键控(CPFSK)信号广泛应用于便携式移动通信系统。
CPM ( continuous phase modulation) is a bandwidth and power efficient signaling scheme suitable for wireless and mobile communications. CPM(连续相位调制)是一种带宽和功率有效的信号处理方法,适用于无线和移动通信。