Coral is formed by certain types of polyp 珊瑚是由某些水螅体构成的
2.
O hydrozoa , scyphozoa 水螅纲,钵水母纲
3.
Note the polypoid mass which on biopsy proved to be a moderately differentiated adenocarcinoma 水螅样的胞块经活检证明是中分化腺癌。
4.
Actually , the term coral is much broader and refers to most of the animals in the class hydrozoa of the phylum cnidaria 其实珊瑚一词所指的动物甚多，包括大多数属珊瑚虫纲及数动属水螅虫纲的刺胞动物。
5.
The joint toxicity of heavy mental ions lead , zinc and cadmium to hydra sp . was evaluated using the additive index method 摘要以水螅为实验生物，采用相加指数法，研究了铅、镉和锌3种重金属离子复合污染物的联合毒性。
6.
Actually , the term coral is much broader and refers to most of the animals in the class anthozoa and a few animals in the class hydrozoa of the phylum cnidaria 其实珊瑚一词所指的动物甚多，包括大多数属珊瑚虫纲及数动属水螅虫纲的刺胞动物。珊瑚是固著的动物，不能移动。
