If not null , the filter procedure is not created assumes the stored procedure is created manually 如果不為null ,則不創(chuàng)建篩選過程(假定存儲過程是手動創(chuàng)建的) 。
Standard test method for isolation and enumeration of enterococci from water by the membrane filter procedure 用薄膜篩選程序?qū)λ心c道球菌隔離和計數(shù)的標(biāo)準(zhǔn)試驗方法
Standard test method for isolation and enumeration of escherichia coli in water by the two - step membrane filter procedure 用兩步膜濾法分離和計數(shù)水中大腸桿菌的標(biāo)準(zhǔn)試驗方法