Log

圓木 /圆木

yuánmù

(trunk of dead tree, cleared of branches)

日誌 /日志

rìzhì

((computer) an append-only sequence of records written to disk)

木頭 /木头

mùtou

(bulky piece of timber)

計程儀 /计程仪

jìchéngyí

(nautical: device for measuring the speed of a vessel)