搜索优化
English
全部
Copilot
图片
视频
地图
资讯
购物
更多
航班
旅游
酒店
搜索
笔记本
Top stories
Sports
U.S.
Local
World
Science
Technology
Entertainment
Business
More
Politics
时间不限
过去 1 小时
过去 24 小时
过去 7 天
过去 30 天
按时间排序
按相关度排序
搜狐
1 个月
化学老师面临5大难题,阿司匹林实验陷入困境!
实验的主要任务就是检测药品中的羧基与酯基,水解后生成水杨酸。而水杨酸遇到氯化铁的那一刻,若呈现出明显的紫色,那不就是科学的奇迹吗! 阿司匹林的重要性 说起阿司匹林,大家一定都有耳闻。自1899年上市以来,这款历久弥新的药物成为了世界上最 ...
一些您可能无法访问的结果已被隐去。
显示无法访问的结果
今日热点
'Anora' crowned best picture
Israel halts Gaza aid entry
Guilty of murder, hate crime
Running for NYC mayor
LSU athlete dies in crash
Makes Oscars history
Brush fires across Carolinas
Judge blocks Trump order
Winter weather warnings
Carbon monoxide ruled out
FBI returns Trump materials
To cut about 7,000 workers
Best supporting actor
Oscars 2025 red carpet
Civil rights icon Dukes dies
ACLU sues Trump admin
US kills Al-Qaeda leader
Edwards fined $35K by NBA
FedEx plane catches fire
Protesters target Vance in VT
Embiid ruled out for season
Minneapolis man charged
Aces moon touchdown
UK, FR to work with Ukraine
More troops at the border
Pitt freshman CB dies
Drake settles legal dispute
US aircraft carrier in SK
No longer needs ventilation
2nd straight NASCAR victory
Saldaña wins first Oscar
Hulu hit by outage
Brody wins best actor
反馈