请输入您要查询的字词:
单词
九九
释义
九九
Encyclopedia
理学
〔术语和基本概念条目〕
释
multiplication
九九
中国古代数学中的乘法口诀或表格,因早先的形式始于“九九八十一”,与现在次序相反,故名。又称九九表、九九之术。
随便看
hydrobiont
hydrobiont feed energy protein ratio
hydrobiontic alga
hydroboration
hydrobromic acid
hydrocal
hydrocarbon
hydrocarbon accumulation
hydrocarbon-alkali fluid
hydrocarbon balance value
hydrocarbon-bearing features detection
hydrocarbon-bearing fluid inclusion
hydrocarbon compounds emitted from anthropogenic sources
hydrocarbon compounds emitted from natural sources
hydrocarbon cracking
hydrocarbon fluid inclusions
hydrocarbon fuel
hydrocarbon fuels
hydrocarbon generating threshold
hydrocarbon (HCs)
hydrocarbon humidity
hydrocarbon metal complex
hydrocarbon oil collector
hydrocarbon oxidation catalytic materials
hydrocarbon poisoning
科学参考收录了854744条科技类词条,基本涵盖了常见科技类参考文献及英语词汇的翻译,是科学学习和研究的有利工具。
Copyright © 2000-2023 Sciref.net All Rights Reserved
京ICP备2021023879号
更新时间:2026/6/11 14:28:55