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
Protein Structure - Primary, Secondary, Tertiary, & Quarternary - Biology
5:22
YouTubeThe Organic Chemistry Tutor
Protein Structure - Primary, Secondary, Tertiary, & Quarternary - Biology
This biology video tutorial provides a basic introduction into the four levels of protein structure - primary, secondary, tertiary and quarternary structure. The primary structure of a protein is based on the sequence of amino acids. The secondary structure is based on localized shapes such as the alpha helix or the beta pleated sheet. The ...
已浏览 79.8万 次2018年9月28日
System Analysis Techniques
How Solar System really moves
0:36
How Solar System really moves
YouTubeSpace Discovery
已浏览 3370 次2024年10月31日
Building a Strong Support System for Success
2:58
Building a Strong Support System for Success
TikTokalphakris_fitness
已浏览 4.4万 次1 周前
An open stress response causes chaos in all systems in the body. When you close the stress response harmony gets restored and the body functions better. Link in our bio for a free masterclass on how to close your stress response! #functionalmedicine #autoimmunedisease #rootcausehealing #nervoussystemhealing #autoimmunewarrior
2:48
An open stress response causes chaos in all systems in the body. When you close the stress response harmony gets restored and the body functions better. Link in our bio for a free masterclass on how to close your stress response! #functionalmedicine #autoimmunedisease #rootcausehealing #nervoussystemhealing #autoimmunewarrior
TikTokkaitiechilds
已浏览 5.3万 次3 周前
热门视频
Chemistry - Atomic Structure - EXPLAINED!
11:45
Chemistry - Atomic Structure - EXPLAINED!
YouTubeThe Organic Chemistry Tutor
已浏览 68.1万 次2017年9月23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 111.2万 次2016年10月30日
Organic Chemistry Drawing Structures - Bond Line, Skeletal, and Condensed Structural Formulas
31:13
Organic Chemistry Drawing Structures - Bond Line, Skeletal, and Condensed Structural Formulas
YouTubeThe Organic Chemistry Tutor
已浏览 106.3万 次2016年7月27日
System Design Methods
How Our Solar System Moves Through Space: The Galactic Orbit and Cosmic Dance Explained
0:34
How Our Solar System Moves Through Space: The Galactic Orbit and Cosmic Dance Explained
YouTubeBioGenix🎯
已浏览 1.3万 次2024年10月30日
Guide to CBC Pathways and KJSEA Results Explained
9:52
Guide to CBC Pathways and KJSEA Results Explained
TikTokteacherwacbc
已浏览 4.2万 次2 周前
#did #didsystem #dissociativeidentitydisorder #dissociativeamnesia #amnesia
2:55
#did #didsystem #dissociativeidentitydisorder #dissociativeamnesia #amnesia
TikTokthepillowfortsystem
已浏览 1.8万 次2 周前
Chemistry - Atomic Structure - EXPLAINED!
11:45
Chemistry - Atomic Structure - EXPLAINED!
已浏览 68.1万 次2017年9月23日
YouTubeThe Organic Chemistry Tutor
Lewis Structures, Introduction, Formal Charge, Molecular Geometry, Resonance, Polar or Nonpolar
2:13:38
Lewis Structures, Introduction, Formal Charge, Molecular Geomet…
已浏览 111.2万 次2016年10月30日
YouTubeThe Organic Chemistry Tutor
Organic Chemistry Drawing Structures - Bond Line, Skeletal, and Condensed Structural Formulas
31:13
Organic Chemistry Drawing Structures - Bond Line, Skeletal, a…
已浏览 106.3万 次2016年7月27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 50.6万 次2022年10月10日
YouTubeBusiness School 101
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 59.2万 次2021年11月13日
YouTubeJenny's Lectures CS IT
Basics of Structural Design
7:40
Basics of Structural Design
已浏览 28.7万 次2020年7月19日
YouTubeCivil Engineering
Biology - Intro to Cell Structure - Quick Review!
11:56
Biology - Intro to Cell Structure - Quick Review!
已浏览 187.1万 次2018年9月30日
YouTubeThe Organic Chemistry Tutor
7:57
Organisational Structures Explained
已浏览 29.4万 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
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