Aimed at the jet noise which is induced by the expand structure and tail tube in the resistant muffler, a finite element model at low Mach number was developed.

针对抗性消声器中扩张结构和尾管引起的射流噪声问题，建立了低马赫数射流噪声有限元分析模型。

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The above method can expand variety of the parts manufactured by tube preform. Part quality also can be improved.

采用上述方法可显著扩大用管坯制造零件的品种，并可提高制品的质量。

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In general a sealing technology involving welding in combination with expand jointing is used for connecting a pipe column to a tube plate in a tubulature type heat ex- changer.

列管式换热器的换热管束与管板连接一般均采用焊接加胀接的密封固定工艺。

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Suburbia continued to expand when the Hampstead tube extended to Golders Green, then part of the countryside, in 1907 in a move to stimulate suburban development in accordance with an American model.

BBC: Tube 150th anniversary: Exploiting the 'suburban dream'

Use your fingers to make a hole in the center and expand the hole so that the dough will fit around the tube.

NPR: Two Centuries of 'Baking in America'