portable recording instrument

• 记录仪

portable recording instrument的用法和样例：

例句

1. He developed the first sound recording equipment.
   而他又改良了声的记录仪。
2. Gliders equipped with radio and recording instruments have been flown into the core of thunderstorms.
   装有无线电设备和记录仪的滑翔机曾飞进雷暴的中心。