针尖

Rock climbers descend the spire of Tricouni Nail in the Needles of South Dakota Black Hills.

攀南达科他州的像针尖一样陡峭的黑山顶上攀而下。

Vaporisation from the needle on initial entryof the syringe into the injector, before the syringe plunger is depressed, can result in partial loss of high boiling components.

当注射器针尖插入汽化室后，压下注射器塞杆之前，会引起高沸点组分的损失。