抽验

抽验	chōu yàn	to test a random sample; to spot-check
抽	chōu	to draw out; to pull out from in between / to remove part of the whole / to inhale (esp. smoke) / (of fabric etc) to shrink / (of certain plants) to sprout; to bud / to whip; to thrash / classifier for sheets (of tissues, wet wipes etc)
验	yàn	variant of 验
验	yàn	to examine / to test / to check