Objective To analyze the value and reliability of combined free flap and pedicled pectoralis major myocutaneous flap in the reconstruction of extensive composite head and neck defects.
目的探讨联合应用游离组织瓣和带蒂胸大肌皮瓣移植修复大型头颈部缺损的可靠性和应用价值。
The chaffy scales on the receptacle of a Flower head in a plant of the composite family, as the sunFlower.
托苞在菊科植物，如向日葵中，承托盘花的花托上的一种膜质鳞片。
At the same time, the turn-around ring of the hammer head is made of special composite material, with the qualities of wear-resisting, self - lubricating, non-maintaining, easy changing etc.
同时锤头回转圈采用特殊复合材料，具有耐磨、自润滑、免维护、易更换等特点。
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