[计] laser beam rotating mirror image recorder

zhuǎn jìng shì jī guāng yǐng xiàng jì lù yí ㄓㄨㄢˇ ㄐㄧㄥˋ ㄕˋ ㄐㄧ ㄍㄨㄤ ㄧㄥˇ ㄒㄧㄤˋ ㄐㄧˋ ㄌㄨˋ ㄧˊ