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
How to sign "hydroelectricity" | ASL signs for science terms
0:04
YouTubePacific Northwest National Laboratory
How to sign "hydroelectricity" | ASL signs for science terms
Definition of "hydroelectricity": underwater device that detects and records acoustic signals under the water, including acoustic tags. Video description: Person signing "hydroelectricity." Learn more about LabSigns: https://bit.ly/3Bjb1YB For more information about PNNL, visit: https://www.pnnl.gov/ Facebook: https://www.facebook.com/PNNLgov ...
已浏览 1 次5 天之前
Hydroelectricity Benefits
GCSE Physics - Hydroelectricity & Tidal Barrages - How they Work | Pros & Cons (2026/27 exams)
3:58
GCSE Physics - Hydroelectricity & Tidal Barrages - How they Work | Pros & Cons (2026/27 exams)
YouTubeCognito
已浏览 8438 次3 个月之前
Hydropower 101
3:13
Hydropower 101
YouTubeStudent Energy
已浏览 401.9万 次2015年5月17日
Hydroelectric Power - How it Works
2:11
Hydroelectric Power - How it Works
YouTubeopgvideos
已浏览 104.1万 次2014年1月9日
热门视频
Project hydroelectricity power generator
2:51:00
Project hydroelectricity power generator
YouTubeTech & Bots
已浏览 1.2万 次3 天之前
A must-have product! LED Shower Panel Tower System Rain Waterfall Shower Column Hydroelectricity L
0:31
A must-have product! LED Shower Panel Tower System Rain Waterfall Shower Column Hydroelectricity L
YouTubeKindred Supply
2 天之前
Black LED Shower Panel Tower System Rain Waterfall Shower Column Hydroelectricity Massage Body Spa B
0:53
Black LED Shower Panel Tower System Rain Waterfall Shower Column Hydroelectricity Massage Body Spa B
YouTubemahabesarallahdolar
1 天前
Hydroelectricity Disadvantages
Hydroelectric Power Plant
6:06
Hydroelectric Power Plant
YouTubeCognifront Products
已浏览 141.5万 次2014年5月15日
What is Hydropower | Science for Kids
4:26
What is Hydropower | Science for Kids
YouTubeLittle School
已浏览 18.8万 次2023年2月11日
How a Dam Works
1:40
How a Dam Works
YouTubeBC Hydro
已浏览 91.1万 次2016年3月15日
Project hydroelectricity power generator
2:51:00
Project hydroelectricity power generator
已浏览 1.2万 次3 天之前
YouTubeTech & Bots
A must-have product! LED Shower Panel Tower System Rain Waterfall Shower Column Hydroelectricity L
0:31
A must-have product! LED Shower Panel Tower System Rain Waterfal…
2 天之前
YouTubeKindred Supply
Black LED Shower Panel Tower System Rain Waterfall Shower Column Hydroelectricity Massage Body Spa B
0:53
Black LED Shower Panel Tower System Rain Waterfall Shower Col…
1 天前
YouTubemahabesarallahdolar
No Coal. No Oil. No Wires. How Did 19th-Century Machines Run?
27:36
No Coal. No Oil. No Wires. How Did 19th-Century Machines Run?
已浏览 1 次1 天前
YouTubeemptydark
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