Galileo did not invent the telescope, but on hearing, in 1609, that such an optical instrument had been made, he quickly built his own device from an organ pipe and spectacle lenses.

伽利略并没有发明望远镜，但在1609年听到有人制造了这种光学仪器后，他很快用管风琴管和眼镜镜片制造了自己的望远镜。

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If oil got into the production pipe from the bottom, then barriers that would have impeded its flow up the cavity around that pipe would have made little difference.

如果油流从油井底部进入到生产管线内，这个环绕在生产管线外部的阻隔体对阻止油流上升能起多大作用呢，两者的差异将会非常小。

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This standard covers the procedures for the heat joining of pipe and fittings made from polyolefin materials utilizing either the socket or butt fusion methods.

这个标准涵盖采用承插热熔和对焊热熔方法对聚烯烃材料管道和连接件进行热连接的程序。

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Criticism of the disaster has sprung in part from decisions made over the design of the BP well, which used a single pipe, known as a "long string", that ran from the sea floor to the bottom of the well.

BBC: Oil spill: BP 'did not sacrifice safety to save money'