当被测要素为轴线、中心线或对称平面时，指引线的箭头和基准符号应与该要素的尺寸线对齐。

If the element being tested with tolerance requirements is an axis, centre line or symmetrical plane, the arrow and datum symbol should be aligned to the dimension line of that element.

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当具有公差要求的被测要素为线或平面时，将指引线箭头和基准符号指在线或平面上，且必须与尺寸线错开。

If the element being tested with a tolerance requirement is a contour line or surface, point the arrow and datum symbol to the contour line or surface, and keep it away from the dimension line.

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银行贷款更为谨慎的一个符号就是伦敦银行同业拆放利率，作为很多美元贷款的利率基准，在过去两周急剧的下降。

In a sign that Banks have become less wary of lending to one another, the London interbank offered rate, a benchmark interest rate for many dollar loans, has fallen sharply over the past two weeks.

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