ondograph

/on-duh-graf, -grahf/US // ˈɒn dəˌgræf, -ˌgrɑf //UK // (ˈɒndəʊˌɡrɑːf, -ˌɡræf) //

签名,签名簿,签名簿上的内容,签名簿上

Definitions

n.名词 noun

1
- : an instrument for graphically recording oscillatory variations, as in alternating currents.