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In addition, the relationship of the spore morphology and taxonomy in Polypodiaceae subfam. Polypodioideae was discussed in this paper, providing more informative data for the systematics and palynology of Polypodiaceae.
本文还就孢子形态及其与该亚科植物的系统分类和演化关系进行了讨论，为水龙骨科的系统分类及孢粉学研究提供了资料。
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The manuscript you sent us has a folio missing.
你送来的原稿少了一页。
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This large caliber pipe has well airproof and mechanical capability so that it can be used in gas transmission.
针对这种管道直径大、密封可靠、力学性能良好等特点，可以用于煤矿通风管道。