典型的杯状细胞类癌不形成有管腔的腺体，且肿瘤细胞呈单个浸润或表现为由粘液细胞和神经内分泌细胞组成的小的实体巢状。
Typical goblet carcinoid does not form glands with lumen, and the tumor cells infiltrate individually or as small solid nests consisting of mucocytes and neuroendocrine cells.
实验发现，在液相粘度较高、表面张力大，熔体材料不浸润固相颗粒和基板等因素的影响下，烧结过程中出现了球化现象。球化的出现妨碍了直接金属激光烧结成形的顺利进行。
During the laser sintering, due to the large liquid phase viscosity and surface tension, the balling effect occurred when the molten did not wet the solid metal particle and the underlying substrate.
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