並前往https://books.google.com.tw/books?id=inud-udaRFwC&pg=PA437&lpg=PA437&dq=pea+ecg&source=bl&ots=7IyG7zaEPd&sig=ACfU3U0Y7841GolKqtM5x8B9bgPPmknhxQ&hl=zh-TW&sa=X&ved=2ahUKEwjroYqauu_4AhUQFLcAHfaGDF0Q6AF6BQjPAhAD