the edge of a knife

Run a blunt knife or spatula around the inside edge of mould.

用刮刀或抹刀沿着磨具的内缘切一下.

This political and bureaucratic game of musical chairs has the entire world on a knife edge, continued uncertainty and lack of confident decision making worsening sentiment.

整个世界饱受这种政治官僚游戏之苦，处于风险边缘，加之持续的不确定性和信心的缺乏，投资者情绪恶化加剧。

It indicates that the rotary-arc gap switch employing a sharp knife-edge electrode as a third trigger electrode can distinctly reduce the electrode erosion and prolong the lifetime of the switch.

在不同开关结构、不同电极材料和不同电流波形情况下对开关进行了单次触发放电实验，验证了旋转电弧、场畸变间隙开关能够有效地减轻开关电极的烧蚀程度；

The game is poised on a knife-edge. One mistake or one piece of good luck could decide it.

比赛形势扑朔迷离。一个失误或是一点运气就有可能决定胜负。

He sharpened the edge of his knife on a grindstone.

他在磨石上磨快了他的刀刃.

In order to conveniently and quantitatively test the surface shape of large aperture optics, a digital knife-edge tester is integrated with a traditional knife-edge tester, CCD image processing and a computer aid calculation.

为便捷地定量检测大口径光学元件面形，运用数字刀口检测技术，把传统刀口仪与CCD图像采集处理、计算机辅助计算相结合，构成数字刀口仪。

In response to a knife inaccurate norte knives, fallen edge of blade design and create a phenomenon of knives feet, and introduced the pair of knife-foot structure, the use of methods, characteristics, attention to matters such as the issue.

针对对刀不准确易产生扎刀、崩刀现象而设计制造一种对刀尺，并介绍了该对刀尺的结构、使用方法、特点、注意事项等方面的问题。