短语词组短语sign bit [计]符号位;符号位元;正负号位符号位;正负符号sign bit code 符号位编码sign bit acquisition system 符号位地震仪sign bit digital seismic instrument 符号位数字仪sign -bit line telemetry 符号位导线遥测Sign -Bit Seismic Record 符号位地震记录 返回 bit sign