Under continued loading the sliding surface is smoothed due to wear and compaction, which will result in a further decrease of the bond stress, similar to the case of plain bars.

在连续载荷下，因为磨损和压紧，该滑动面是光滑的，将导致粘结应力的进一步下降，类似于无节钢筋的情况。

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The jewellers want the government to slap a 20% value-added tax on the ingots, lest Italians discover that they can hedge their fears of inflation more cheaply with plain gold bars than with baubles and bangles.

ECONOMIST: Golden opportunities