One thing is certain : which units are used must be obvious in the interface any place where you show a dimension (aka avoid the excel set column / row size dialog with no unit).
I also guess that alas you'll have to handle both systems. Some americans know about the metric system but not all of them. And even the ones who understand it don't necessary love it.
What I would do : default to metric system but provide some options to change it ...
The only places yet to adopt the metric system are USA, Burma and Liberia. I think that in these places, people would love to have the English measurements as their default. I don't think USA citizens are comfortable enough with the metric system to actually use it (with exception to engineers and scientists).
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有一点是肯定的：在界面中任何显示尺寸的地方，使用的单位必须是明显的（也就是避免没有单位的 Excel 设置列/行大小对话框）。
我还猜想，唉，你必须同时处理这两个系统。
一些美国人知道公制，但不是全部。
即使是理解它的人也不一定会喜欢它。
我会做什么：默认为公制，但提供一些选项来更改它......
One thing is certain : which units are used must be obvious in the interface any place where you show a dimension (aka avoid the excel set column / row size dialog with no unit).
I also guess that alas you'll have to handle both systems.
Some americans know about the metric system but not all of them.
And even the ones who understand it don't necessary love it.
What I would do : default to metric system but provide some options to change it ...
唯一尚未采用公制的国家是美国、缅甸和利比里亚。
我认为在这些地方，人们会喜欢将英制测量值作为默认值。我认为美国公民对公制系统的适应程度不足以实际使用它（工程师和科学家除外）。
The only places yet to adopt the metric system are USA, Burma and Liberia.
I think that in these places, people would love to have the English measurements as their default. I don't think USA citizens are comfortable enough with the metric system to actually use it (with exception to engineers and scientists).
在加拿大，我们根本不使用英寸或码。我们偶尔会用脚，但只是因为一只脚几乎正好是 30 厘米（一把尺子）。
In Canada we do not use inches or yards at all. We occasionally use feet, but only because one foot is almost exactly 30 cm (one ruler).