The display apparatus for a test-chart, the memory device and the keyboard are respectively connected with the processor.

所述视力表显示装置、存储器、键盘分别与处理器相连。

youdao

The display apparatus for a test-chart, the memory device and the keyboard are respectively connected with the processor.

所述视力表显示装置、存储器、键盘分别与处理器相连。

youdao