The horseshoe-shaped section supports your head and can be adjusted to the correct thickness.

马蹄型部分可支撑你的头部，调整到正确的厚度。

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A part that operates by sliding, as the U-shaped section of tube on a trombone that is moved to produce various tones.

型滑管：靠滑动操作的部分，如长号上u型的管子部分，拉动它可以产生各种声调。

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The second pipe was set vertically, with a U-shaped section cut out of one side of the bottom end to mate with the horizontal pipe.

第二根管子倒竖，用一个U型的被切去底部的一边的部件跟平躺的那个管子并排。

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This section was shaped by forces even more ancient than the Romans.

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Since small deviations are common and large ones are rare, the result of plotting data in this way is a curve shaped somewhat like the cross-section of a bell.

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It has a shorter, lower, thinner and more sculpted nose section, with a dramatically shaped front wing.

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