【化】 poly(vinyl formalacetal)
【化】 poly(vinyl alcohol); vinol
【医】 polyvinyl alcohol
contract; crinkle; draw back; shrink; withdraw
armour; first; nail; shell
【医】 carapace; concha; conchae; helo-; nail; onycho-; onyx
aldehyde
【化】 acetaldehyde; aldehyde; ethanal; ethylal
【医】 acetaldehyde; acetic aldehyde; ethanal