null a.无效力的,无效的,无价值的...null space 零空间...null hypothesis 虚假说,零假说零假设;原假设...null zone 盲区...null statement 空语句...null matrix 零矩阵...null-force system 零力系...null process 零进程;空进程...null allocation 无效分配,空分配...null gate "零"门...null data set 空数据集,伪数据组...null pointer 零指示字,零指针...null and void vote 废票,无效票决...null term 空项,无效项...null direction 零方位...null filter 零值滤波器...null range 零区域...null string 空串;空行...null pointer value 零指示字值...AIaph null 阿列夫零...null index range 零变址区域...
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