钳制

钳制	qián zhì	to suppress; to muzzle; to gag
钳	qián	pincers / pliers / tongs / claw (of animal) / to grasp with pincers / to pinch / to clamp / to restrain / to restrict / to gag
制	zhì	system / to control / to regulate / variant of 制
制	zhì	to manufacture / to make