18.Leaves basal and cauline, alternate, rarely opposite or whorled, simple or variously compound, palmately nerved, rarely penninerved, with or without stipules.
叶基生和茎生,互生,很少对生或者轮生,单叶或者复叶,掌状叶脉,很少羽状脉,有或无托叶。
19.A relationship between the accepting powers of sub logarithmic space bounded two way alternating pushdown automata with and without 1 inkdot is investigated.
对具有1个墨水点的和没有墨水点的亚对数空间限定替式下推自动机之间的关系进行研究。
20.An alternate procedure is to soak the affected areas in an iced 0.13% water solution (1:750) of Zephiran chloride (benzalkonium chloride solution, NF).