It is now necessary to introduce a sign convention for radii of curvature.
现在必须介绍曲率半径的正负号规则。
Whatever the convention is within a system of differences, that's what makes the sign intelligible.
这些惯例存在于一个有差别的系统中，这就让符号变得有意义了。
But getting more countries to sign up to The Hague Convention would probably help.
但让更多的国家签署海牙公约也许能有所帮助。
These objections may soon be overcome: the Bush administration, along with moderate Republican senators like Richard Lugar now want to sign up to the convention and start making America's case.
不过这些异议可能不久就会得以克服：布什当局以及理查德·卢格（Richard Lugar）等共和党温和派参议员现在想签署该公约并着手进行美国的调查。
So to make things simpler we are using this convention and you just put a minus sign if you are doing physics.
我们只是借用了这个物理概念来简化问题，你算物理题的时候加个负号上去就好了。
As a sign of culture, the dress has recorded every minute change of trend and convention that occurred by the social transition.
服饰作为文化的一种表征，完整记录了每一次社会转型中风尚习俗的细微变化。
The convention delegates were asked to sign in at the gate.
要求大会代表在站口签到。
The handedness of the helical wave fronts of the LG modes is linked to the sign of the index land can be chosen by convention.
LG模的螺旋波前的左右手习惯是和l的特征相联系的，能够按规定进行选择。
If you sign-up on the website for updates, you will be entered to win free airfare and accommodations for the week of the Convention.
假如你注册网站取得更新，你将有时机博得免费机票和住宿参与为期一周地年夜会。
The link between a linguistic sign and its meaning is a matter of convention.
语言学上的符号和它的意义之间是约定俗成的关系。
The link between a linguistic sign and its meaning is a matter of convention.
语言学上的符号和它的意义之间是约定俗成的关系。
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