[Vocabulary] show up VS appear

[michael147]

The waves of the electricocardiogram showed up/appeared clearly on the paper.

Q1. Showed up or appeared?? Which one is correct??

Q2. Is the whole sentence natural in English?

 

[Rover_KE]

1. They are both correct. Use only one question mark for each question.

2. They are both natural English.

Rover

 

[michael147]

1. They are both correct. Use only one question mark for each question.

2. They are both natural English.

Rover

Thanks~~~ I get that.