Condsidering the real condition of filter production in the country,the concents,properties and advantages of state standard filters are introduced and the information of camera standardization is exchanged.
结合国内滤光镜生产实际情况，介绍了滤光镜国家标准的内容、性能及其先进性，交流了照像机综合标准化工作信
Having a sharp point or tip.
尖的,尖锐的有尖点或尖端的
pierce with a sharp stake or point.
用尖锐的树桩或者尖锐点刺穿。
cutting remarks; edged satire; a stinging comment.
尖锐的评论；尖锐的讽刺文学；尖刻的评论。
make a loud, piercing sound.
发出大的尖锐的声音。
To cause to make an abrupt, sharp sound.
使发出短促、尖锐的声音
a sudden sharp noise.
一种突然的、尖锐的声音。
They have all been sharp class struggles.
这是尖锐的阶级斗争。
he was incisively critical.
他受到了尖锐的批评。
a short light metallic sound.
清脆、尖锐的金属响声。
any implement that is used to make an edge sharper.
用于使边缘尖锐的工具。
an arch with a pointed apex.
有一个尖锐的顶点的拱。
make a sharp explosive noise.
发出尖锐的爆炸的声。
Her shrieks pierced the air.
她尖锐的叫声直刺云天.
sharpen with a strap.
用磨刀皮带使变得尖锐。
a single sharp crash of thunder.
一个尖锐、爆裂的雷声。
To cause to make a sharp, snapping sound.
使发出尖锐的爆裂声
a sharp high-pitched metallic sound.
尖锐高音调的金属声。
sharpen by rubbing, as on a whetstone.
在磨石上磨擦使变尖锐。