smooth core

The atherosclerotic plaques in UA and AMI patients were mainly the atheroma ( unstable plaque) with large necrotic core (> 40%), thin fibrous cap, less smooth muscle cells and abundant foamy cells.

UA和AMI病例中斑块主要为不稳定斑块，病理特征为脂质坏死中心大（大于40%），纤维帽薄，平滑肌细胞少而泡沫细胞多。

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With the hydrothermal synthesis time extended, the crystal grain by the smooth surface of solid ball into the core-shell structure which surface is composed of nano-flakes, and finally into a perforated hollow spherical structure.

随着水热时间的延长，水热产物逐渐由表面光滑的实心球转化成表面由纳米纤维组成的核壳结构，最后转化为带孔中空球形结构。

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Gradient-density polyurethane foam has smooth, high-density, tough and tensile external skin and low-density core.

梯度密度聚氨酯泡沫塑料具有高密度 、 结实光滑而坚韧的外表皮和 低密度 泡沫芯.

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Compared with the existing process, it is characterized by smooth core extracting, high accuracy, even core wall and light in weight, with less porosity and low waste core, but without binding and drying.

与原工艺相比，有抽芯顺畅，坭芯无需粘合，无需烘干，尺寸精度高，气孔缺陷少，废芯率低的特点，且坭芯壁厚均匀，重量减轻。

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The valve core of the regulating valve adopts helical throttle orifice with smooth and stable regulation;

调节阀的阀心采用螺旋线型节流孔，具有易调节和调节稳定的特点；

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