短語詞組短語length - diameter ratio 長徑比length and diameter ratio 長徑比length to diameter ratio 直徑長度比;長徑比;長度直徑比extruder length to diameter ratio 擠塑機(jī)長徑比great length -diameter ratio 長徑比大Optimal length -diameter ratio 最佳長徑比critical length -diameter ratio 臨界長徑比hole length to diameter ratio 長徑比 返回 length diameter ratio