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The mainstructure parameters of spirally grooved tube are diameter of tube, fin pitch,corrugation depth, wall thickness, spirally angle and spira.

旋槽管(亦管)是其中一个要分支,它是一种高效异形强化传热管件。

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droppage, dropped, dropper, dropper-in, droppers, dropping, droppings, drop-pipe, dropround, drops,

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3G, 401(K), a,

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Who Smarted? - Educational Podcast for Kids

Corrugation might be the coolest thing since before and after sliced bread.

瓦楞纸可能片面包问世以来最酷的发明了。

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NYC NOW

If we hear percussive noising going through, maybe it's corrugation, which is just bumpiness in the head of the rail.

如果我们听到有节奏的噪音经过,那可能钢轨波纹磨损, 也就钢轨头部的平整。

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Who Smarted? - Educational Podcast for Kids

As I mentioned before, the corrugation made the cardboard more strong and more durable for transporting all sorts of fragile things.

如前所述,瓦楞结构使纸板更加坚固耐用,适合运输各种易碎物品。

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TED-Ed(视频版)

He inserts a screw into one end and, using a piece of dental floss, crushes the paper between the threads of the screw, creating a series of tiny, equidistant corrugations.

他在吸管的一端插入一颗螺丝,用一段牙线, 在螺丝的螺纹间碾压纸张,制造出一连串微小且等距的褶皱。

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drosulfakinin, drought, drought-enduring, drought-resistant, droughts, droughty, drouth, drouthy, drove, drover,

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