挺杆

挺杆	tǐng gǎn	tappet (machine part)
挺	tǐng	straight / erect / to stick out (a part of the body) / to (physically) straighten up / to support / to withstand / outstanding / (coll.) quite / very / classifier for machine guns
杆	gān	(bound form) pole; shaft
杆	gǎn	stick / pole / lever / classifier for long objects such as guns