个人资料图片
English
  • 全部
  • 搜索
  • 图片
  • 视频
  • 地图
  • 资讯
  • 更多
    • 购物
    • 航班
    • 旅游
  • 笔记本
报告不当内容
请选择下列任一选项。
  • 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 360p360p 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
  • 清除筛选条件
  • 安全搜索:
  • 中等
    严格中等(默认)关闭
筛选器
Organic Chemistry Drawing Structures - Bond Line, Skeletal, and Condensed Structural Formulas
31:13
YouTubeThe Organic Chemistry Tutor
Organic Chemistry Drawing Structures - Bond Line, Skeletal, and Condensed Structural Formulas
This organic chemistry video tutorial shows you how to draw lewis structures, bond line structures and skeletal structures including condensed structural formulas. It also shows you how to draw the lewis structures of functional groups such as alkanes, alkenes, alkynes, carboxylic acids, alcohols, ethers, esters, ketones, aldehydes, amides ...
已浏览 105.7万 次2016年7月27日
Water Cycle
WATER CYCLE | Biology Animation
6:16
WATER CYCLE | Biology Animation
YouTubeEarthPen
已浏览 6.5万 次2020年9月6日
how the water cycle works | hydrological cycle explained
2:12
how the water cycle works | hydrological cycle explained
YouTubeGochlarWorks
已浏览 10.4万 次2021年5月10日
WATER CYCLE💧| The water cycle process | Easy science video
2:10
WATER CYCLE💧| The water cycle process | Easy science video
YouTubeLearn Easy Science
已浏览 39.1万 次2021年10月18日
热门视频
C_109 Structures in C - part 1| Introduction to Structures | C Programming
12:55
C_109 Structures in C - part 1| Introduction to Structures | C Programming
YouTubeJenny's Lectures CS IT
已浏览 58.5万 次2021年11月13日
Lewis Structures, Introduction, Formal Charge, Molecular Geometry, Resonance, Polar or Nonpolar
2:13:38
Lewis Structures, Introduction, Formal Charge, Molecular Geometry, Resonance, Polar or Nonpolar
YouTubeThe Organic Chemistry Tutor
已浏览 110.9万 次2016年10月30日
Chemistry - Atomic Structure - EXPLAINED!
11:45
Chemistry - Atomic Structure - EXPLAINED!
YouTubeThe Organic Chemistry Tutor
已浏览 67.8万 次2017年9月23日
Water Pollution
Water Water Everywhere | Learn All About Water For Kids
8:51
Water Water Everywhere | Learn All About Water For Kids
YouTubeLearn Bright
已浏览 49.8万 次2021年11月30日
How Much Water Is in Earth, Human Body & Foods? 💧 | Amazing Water Facts water percentage water facts human body water percentage earth water percentage water in fruits water in vegetables hydration facts science facts amazing facts educational shorts knowledge video water importance health facts #WaterFacts #WaterPercentage #HumanBody #EarthFacts #ScienceShorts #AmazingFacts #KnowledgeShorts #HealthFacts #Hydration #FoodFacts #EducationalVideo #Shorts | Knowledge pills
0:06
How Much Water Is in Earth, Human Body & Foods? 💧 | Amazing Water Facts water percentage water facts human body water percentage earth water percentage water in fruits water in vegetables hydration facts science facts amazing facts educational shorts knowledge video water importance health facts #WaterFacts #WaterPercentage #HumanBody #EarthFacts #ScienceShorts #AmazingFacts #KnowledgeShorts #HealthFacts #Hydration #FoodFacts #EducationalVideo #Shorts | Knowledge pills
FacebookKnowledge pills
已浏览 1.7万 次2 天之前
NASA | Earth's Water Cycle
5:53
NASA | Earth's Water Cycle
YouTubeNASA Goddard
已浏览 87.9万 次2012年8月3日
C_109 Structures in C - part 1| Introduction to Structures | C Programming
12:55
C_109 Structures in C - part 1| Introduction to Structures | C Prog…
已浏览 58.5万 次2021年11月13日
YouTubeJenny's Lectures CS IT
Lewis Structures, Introduction, Formal Charge, Molecular Geometry, Resonance, Polar or Nonpolar
2:13:38
Lewis Structures, Introduction, Formal Charge, Molecular Geomet…
已浏览 110.9万 次2016年10月30日
YouTubeThe Organic Chemistry Tutor
Chemistry - Atomic Structure - EXPLAINED!
11:45
Chemistry - Atomic Structure - EXPLAINED!
已浏览 67.8万 次2017年9月23日
YouTubeThe Organic Chemistry Tutor
Protein Structure - Primary, Secondary, Tertiary, & Quarternary - Biology
5:22
Protein Structure - Primary, Secondary, Tertiary, & Quarternar…
已浏览 79.3万 次2018年9月28日
YouTubeThe Organic Chemistry Tutor
6 Most Common Types of Organizational Structures (Pros & Cons) | From A Business Professor
16:46
6 Most Common Types of Organizational Structures (Pros & …
已浏览 50.3万 次2022年10月10日
YouTubeBusiness School 101
Basics of Structural Design
7:40
Basics of Structural Design
已浏览 28.6万 次2020年7月19日
YouTubeCivil Engineering
Organisational Structures Explained
7:57
Organisational Structures Explained
已浏览 29.3万 次2020年5月31日
YouTubeTwo Teachers
9:44
Types of Organizational Structure in management #organizationalstruc…
已浏览 44.4万 次2021年6月2日
YouTubeEducationleaves
10:04
DIAMOND CRYSTAL STRUCTURE 3D ANIMATION
已浏览 1.5万 次2022年9月21日
YouTubeLearn How? What? Why?
观看更多视频
静态缩略图占位符
更多类似内容
反馈
  • 隐私
  • 条款