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Studies on Chromosome Karyotype of American Rex and Plicate Rex

美系獭兔与皱襞型獭兔染色体核型研究

Plicate carpel 6 ~8, initiated in a whorl simultaneously.

心皮6～8枚, 呈一轮同时发生,为对折型心皮.

The experiment was performed by using GXPP# as filter material, and the filter was plicate structure in which the gas flow was parallel to the filter face. Through the experiment, the best structure parameter was found, efficiency and endurance test was carried through.

选用新型过滤材料改性聚丙烯GXPP，以折叠型平行气流布置方式的过滤器结构进行了油烟雾净化实验，找出了过滤器的最佳结构参数，并进行了过滤器的净化能力及耐久性能试验。

Large genus of largely terrestrial orchids with one or a few plicate leaves and slender spikes or tiny mostly green flowers; cosmopolitan.

一个陆生兰花大属，生有一片或数片扇状叶，细长穗，花小，主要为绿色；世界性生长。