surface sheath

基本解释

Under the same parameters, the sheath near the dielectric surface is thinner than that near the metal surface.
在相同的参数条件下，与金属靶相比，介质靶表面附近的鞘层厚度变薄；
The hair shaft and inner root sheath move together as the hair grows toward the surface: the outer root sheath remains fixed in position.
毛干和内根鞘当到达体表时融合在一起：外根鞘仍然保持在原来的位置。
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A certain degree of free fibrillar structure was observed on the fiber surface due to the sheath structure of the fiber subjected to the greater drawing and orientation.
纺丝过程中纤维皮层结构受到更大的拉伸取向作用，并在纤维表面出现一定游离原纤化结构。