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1.extinct group of bony-plated fishes with primitive jaws.
灭绝鱼类，具有大骨片构成的甲及原始的颚。收藏指正
2.a group of mostly extinct primitive bony fishes characterized by armor-like bony scales.
大部分已绝迹的远古硬骨鱼类群，有甲壳状骨质鳞片。收藏指正
3.The primitive study on the emplacement mechanism suggests that the volcanic rocks had underwent the stages of the trench accretion and the basement of forearc basin, which received the elastics of the Yanbian Group.
经过初步的侵位机制分析，可知这套火山岩经历了海沟增生楔、弧前盆地基底，并接受了盐边群碎屑岩的沉积。收藏指正
4.Let Dbe a2 -(v,k,1 ) design and G≤ Aut Dbe the automorphism group of D. In this paper,itis proved thatif G is block-primitive and G PSU(3 ,q2 ) (q=2 l) ,then it is also point-primitive.
讨论自同构群是酉群 PSU(3 ,q2 ) (q=2 l)的区 -本原的 2 -(v,k,1 )设计 .收藏指正
5.a group of families or trees and shrubs and herbs having well-developed perianths and apocarpous ovaries and generally regarded as the most primitive extant flowering plants; contains 36 families including Magnoliaceae and Ranunculaceae; sometimes classified as a superorder.
一组乔木灌木和草本植物目，有良好的花被和心皮连生的子房，通常被视为现存最原始的开花植物；有36科，包含木兰科和毛茛科。收藏指正
6.Main Theorem 2 Let V be a 2-(v, k, 1) design and G an automorphism group of V. If G is primitive on the blocks and G = PSU(3,q~2), then V is a Hermitian Unital.
主要定理2 设D是2-(v，k，1)设计，G是D的自同构群且在D的区组集上本原。 若G≌PSU(3，q~2)，则D是Hermite Unital。收藏指正
7.a group of chiefly woody plants considered among the most primitive of angiosperms; perianth poorly developed or lacking; flowers often unisexual and often in catkins and often wind pollinated; contains 23 families including the Betulaceae and Fagaceae (includes the Amentiferae); sometimes classified as a superorder.
主要是木本植物的一个集合，被视为最原始的木本植物之一；没有花被，或花被发育的较差；其花通常是雌雄同体，为荑花序，通常通过风来受精。收藏指正
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