词汇	returning echo
释义	returning echo 回波,反射信号
随便看	optimized characteristic analysis optimized choice optimized circuit optimized circuit design optimized classes optimized coagulation optimized code Optimized code to increase performance optimized codon usage optimized coefficient method optimized collocation optimized colloid model optimized combination optimized combination model optimized combination of production factors optimized combustion of boiler optimized completion optimized conditions optimized configuration optimized conformity optimized construction optimized construction scheme optimized control optimized controller optimized controlling