尖头器

石制的抛掷尖物

objective points───出击目标；弹着点

objective point───出击目标；弹着点

projective tests───投影测试；投射测验

Brownie points───（美国7至9岁）幼年女童子军积分；（成绩和善行的）品行奖分

collection points───收集点

inflection points───[数]拐点；转折点

percentage points───百分点（percentagepoint的复数形式）

This paper introduces the forming and assembling technology for some types of plastic belts and points out how the technology has influence upon the performance of projectile.───本文介绍了几种塑料弹带的成型工艺和装配工艺及其对炮弹性能的影响。

Riel-Salvatore discovered projectile points, ochre, and bone tools, among many other objects at different Uluzzian sites.───瑞尔，萨尔瓦多在不同的Uluzzian考古地点，发现了箭点，赭石，和骨制工具以及其他物体。