How do heart valves function?
3:05
YouTubeMatch Health
How do heart valves function?
How do heart valves function? The heart has four valves that open as one-way gates to allow blood to flow forward through the heart chambers and on to the body. The valves close to prevent blood from flowing backward into the chambers. If you are interested in licensing this video or the heart valve embedded animations, please contact us at www ...
已浏览 38.8万 次2017年3月17日
Valve Index Review
Valve's Standalone VR Headset Looks to Change the Game
12:16
Valve's Standalone VR Headset Looks to Change the Game
YouTubeIGN
已浏览 1.9万 次2 天之前
Hands-On: Valve Steam Frame Virtual Reality Headset!
56:07
Hands-On: Valve Steam Frame Virtual Reality Headset!
YouTubeAdam Savage’s Tested
已浏览 21.9万 次2 天之前
Valve’s New Console and Controller - STEAM Machine & STEAM Controller (2026) First Look
14:31
Valve’s New Console and Controller - STEAM Machine & STEAM Controller (2026) First Look
YouTubeLinus Tech Tips
已浏览 187.2万 次1 天前
热门视频
How to Install Shutoff Valves | The Home Depot Plumbing Tips
2:22
How to Install Shutoff Valves | The Home Depot Plumbing Tips
YouTubeThe Home Depot
已浏览 80.8万 次2019年11月3日
How Globe Valves Work
4:05
How Globe Valves Work
YouTubesaVRee
已浏览 23.2万 次2018年9月5日
Control Valve Actuators Principle
3:24
Control Valve Actuators Principle
YouTubeInstrumentation Tools
已浏览 29.3万 次2016年1月13日
Valve Index Games
Steam Controller First Hands-On: Did Valve Get it Right This Time?
8:39
Steam Controller First Hands-On: Did Valve Get it Right This Time?
YouTubeIGN
已浏览 7.6万 次2 天之前
Hands-On With Steam Machine: Valve's Beautiful PC/Console - Specs, Impressions And More
51:37
Hands-On With Steam Machine: Valve's Beautiful PC/Console - Specs, Impressions And More
YouTubeDigital Foundry
已浏览 75万 次2 天之前
Hands-On: Valve Steam Controller 2 and Steam Machine!
27:50
Hands-On: Valve Steam Controller 2 and Steam Machine!
YouTubeAdam Savage’s Tested
已浏览 673 次19 小时之前