在内部作成圆形凸肩以代替锐缘孔板状的侧面。

It has rounded shoulders inside instead of the sharp orifice - like edge.

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门上没有把手，也没有钥匙孔，只有一块上了年头的光光的木板，上面有个鹰状的青铜门环。

There was no handle and no keyhole: nothing but a plain expanse of aged wood, and a bronze knocker in the shape of an eagle.

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通孔盘状及平面阵列陶瓷多层电容器焊料所含的铅。

Lead in solders for the soldering to machined through hole discoidal and planar array ceramic multilayer capacitors.

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