No dorsal ridge was found in the egg surface.
卵表面在光镜下未见有卵脊。
The egg surface carrier rates of chickens and ducks are 6.7% and 10.0% respectively.
对两种禽蛋表面带菌情况的调查，新鲜鸡、鸭蛋的带菌率分别为6.7%与10.0%。
The evident arborization structure was observed at the egg handle on egg surface when the egg protoplasm drew back.
卵质收回时，在卵表面卵柄处可见明显的树枝状结构。
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