proto type
柯林斯词典
1. N-COUNT A prototype is a new type of machine or device that is not yet ready to be made in large numbers and sold. 样机
Chris Retzler has built a prototype of a machine called the wave rotor. 克里斯·雷兹勒做出了一台叫做波转子的样机。
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1. N-COUNT A prototype is a new type of machine or device that is not yet ready to be made in large numbers and sold. 样机
Chris Retzler has built a prototype of a machine called the wave rotor. 克里斯·雷兹勒做出了一台叫做波转子的样机。