a distensible membranous sac (usually containing liquid or gas)
双语例句
1. Nematocyst warts on the small tentacles become stick from conical and the shape of gonads changes triangular pocket-like from grain-like to small vesica.
小触手刺丝囊疣从乳突状变为棒状；生殖腺形状从米粒状变为小囊状、三角囊袋状。
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2. The influence of some raw materials such as polyester the uniformity vesica nt foams and catalysts to the preparation of rigid polyurethanes foam is also discussed.
探讨了聚酯多元醇、泡沫稳定剂、发泡剂及催化剂等原料对硬质聚氨酯泡沫塑料制备的影响。
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3. Dry powder granule raw materials which have special requirements to drying. for example: HP vesica nt lees light calcium carbonate active white earth magnetic powder graphite medical slag and so on.
4. Dry powder granule raw materials which have special requirements to drying. for example: HP vesica nt lees light calcium carbonate active white earth magnetic powder graphite medical slag and so on.
