【简答题】英文翻译The basic functions performed in a nonreciprocaing extruder are solids conveying, melting, melt conveying, mixing, and sometimes decolatilization. The very same functions are performed in a recipr...
【单选题】When there are more dissolved solids (higher concentration) in the surrounding medium than there are inside the bacterial cell, the bacteria cell is considered __________ in relation to the surroundin...