英和和英

a master key

the roller on a typewriter against which the keys strike

the key of D major

an inveterate changer of the menu

a key on a typewriter keyboard, called a backspace key

a master switch

a {selecting switch}

Nordic skiing

a button called function key on the keyboard of a computer

the key on a typewriter or a word processor that causes a tabulation

coaxial attenuator

smart key

a key ring

white key

a key of a typewriter or an input device of a computer, called shift key

a shift key

autosomal gene

splice genes

splice genes

an insulator―a switch

birefringence filter

a cipher-key

an agent that produces coagulation

recombinant DNA

an odor-producing agent

an agent that triggers mitosis

a coagulation factor

mutagenic agent

a locking device called a {cat bar bolt}

descendent gene