短語詞組短語B -IT 突發(fā)標志位Dihydro -b-bit ionone 二氫乙位紫羅蘭酮bit b bit 漸漸MSB B Most Significant Bit 最高有效位BCB B Bit Control Block 位控制塊BIB B Backward Indicator Bit 后向指示比特FIB B Forward Indicator Bit 前向指示比特LSB B Least Significated Bit 最低有效位hierarchical B -picture bit allocation 分層B圖像比特分配 返回 b bit