词条„breech“在英语 » 中文中的译文

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breech birth, breech delivery 医学

breech birth

臀位分娩 túnwèi fēnmiǎn

单语范例（未经PONS编辑处理）

英语

In breech presentation, fetal heart sounds are heard just above the umbilicus.

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As the powder case clears the top of the breech block, the block automatically rises to seal the chamber.

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Riders 13 years or older generally wear tall, black field boots with breeches.

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Breeches matched, or could be silk of a similar colour.

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The slide was fixed to the frame by a transverse wedge behind the breech that in turn was held in place by the firing pin.

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He would later co-patent a new forceps instrument to assist in breech birth deliveries.

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This served to delay the opening of the breech rather than locking it.

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As the breech was opened for reloading, hot gases were released into the turret, causing it to catch fire.

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It featured a rotary breech block and side ejection port as well as a free-floating barrel.

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The bolt also features an anti-bounce mechanism that prevents the bolt from bouncing off the barrel's breech surface.

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