Rewards
English
全部
图片
视频
地图
资讯
购物
更多
航班
旅游
酒店
房地产
笔记本
时长
全部
短(小于 5 分钟)
中(5-20 分钟)
长(大于 20 分钟)
日期
全部
过去 24 小时
过去一周
过去一个月
去年
清晰度
全部
低于 360p
360p 或更高
480p 或更高
720p 或更高
1080p 或更高
源
全部
Dailymotion
Vimeo
Metacafe
Hulu
VEVO
Myspace
MTV
CBS
Fox
CNN
MSN
价格
全部
免费
付费
重置
安全搜索:
中等
严格
中等（默认）
关闭
筛选器
最匹配的结果
6:00
Which chemical reaction is catalysed by maltase?... | Filo
已浏览 5545 次
9 个月之前
askfilo.com
0:14
$
Combustion Reaction Diagram. The chemical formula for the combustion reaction. 4K Video animation.
8 个月之前
shutterstock
jaouad maha
SOLVED: Maltase is an enzyme that hydrolyzes maltose into two glucose molecules: Draw an energy diagram for the reaction with and without maltase: How does maltase affect the reaction?
2021年11月2日
numerade.com
General Chemistry - Online Tutor, Practice Problems & Exam Prep
1 个月前
pearson.com
0:27
Chemical reaction involving acid causes smoke
11 个月之前
CTVNews
5:15
Venn Diagram. Solving questions on... - Table of Knowledge TV
已浏览 1.2万 次
8 个月之前
Facebook
Table of Knowledge TV
4:19
Question on SET involving Venn... - Table of Knowledge TV
已浏览 5003 次
9 个月之前
Facebook
Table of Knowledge TV
2:49
SET Theory: Question on Venn... - Table of Knowledge TV
已浏览 2.9万 次
9 个月之前
Facebook
Table of Knowledge TV
0:16
PH Chemistry - Eyewash stations are essential in labs for...
已浏览 2674 次
1 个月前
Facebook
PH Chemistry
2:37
Akron chemical plant fire forces evacuations
3 个月之前
Yahoo
WEWS-Cleveland Videos
2:27
Ohio chemical leak evacuation orders still in effect
2 个月之前
CBS News
3:30
Friday update on Thursday's chemical fire in Akron
3 个月之前
Microsoft News
3:38
Large chemical fire in Akron continues
3 个月之前
Microsoft News
WEWS Cleveland, OH
1:02
The iodine clock reaction is a classic chemical clock demonstration experiment aimed at displaying chemical kinetics in action; it was discovered by Hans Heinrich Landolt in 1886[1],[2]. The iodine clock reaction exists in several variations, each involving iodine species (iodide ion, free iodine, or iodate ion) and redox reagents in the presence of starch. Two colorless solutions are mixed and, at first, there is no visible reaction. After a short time, the liquid suddenly changes to a dark blu
已浏览 326 次
4 个月之前
Facebook
The Physics Lab
3:09
US: One deceased, more injured after chemical release at PEMEX Deer Park facility
2 个月之前
Microsoft News
One Step Chemical-Free Cargo Hold Cleaning
1 个月前
linkedin.com
12:00
Two adiabatic processes involving an ideal gas are plotted on a... | Filo
已浏览 5583 次
9 个月之前
askfilo.com
Large chemical fire on Rosemary Boulevard in Akron
已浏览 1.1万 次
3 个月之前
Facebook
News 5 Cleveland
0:59
Walsall: Canal tested for chemical spillage including sodium cyanide as dead fish float on surface | UK News | Sky News
3 个月之前
Sky News
0:38
Mixture of Solute and Solvent is equal Solution#shorts#ytshorts#solution
已浏览 178 次
4 个月之前
YouTube
Mano Arts & Crafts
43:15
chemistry class 11th _ch 04_ chemical bonding- M.O.T आण्विक कक्षक सिद्धांत|lec 12 |part 02| UP Board
已浏览 10 次
2 周前
YouTube
knowledge with risb
1:12:59
[서울대학교 공과대학] 재료열역학 02. The First Law of Thermodynamics
已浏览 7001 次
2018年9月7日
YouTube
서울대학교공과대학
0:12
Why do fireflies emit light? #Fireflies #Science #Light #Nature #Explore
已浏览 5 次
5 个月之前
YouTube
techtuv
0:48
How does bioluminescence in deep-sea creatures work?
已浏览 416 次
2 周前
YouTube
Curious_jm
1:27
Name the enzyme that catalyses maltose into glucose.
已浏览 80 次
2020年3月29日
YouTube
Doubtnut
3:38
INVOLVING SETS AND VENN DIAGRAM
已浏览 2 次
3 周前
YouTube
Jae Ann Marie Magtibay
1:00
Ever wondered why fireflies light up the night? #facts #bioluminescence
已浏览 558 次
1 个月前
YouTube
Dreams and Discoveries 360
5:11
1st year Biology MCQS || Chapter 2 || Mechanism of enzyme action with easy explanation
已浏览 282 次
2023年11月14日
YouTube
Amna Hussain Korai
0:58
How Do Jellyfish Glow? 🌟
已浏览 209 次
3 个月之前
YouTube
Animal facts
0:50
The Strange Phenomenon of Plants That Glow in the Dark
已浏览 3 次
3 周前
YouTube
Truth Bomb Fact Central
观看更多视频
报告不当内容
请选择下列任一选项。
无关
低俗内容
成人
儿童性侵犯
Invisible focusable element for fixing accessibility issue
反馈
反馈
