結果 : what is uv a

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ULTRAVIOLET RAYS | How Harmful Are UV Rays? | Ultraviolet Radiation | Dr Binocs Show | Peekaboo Kidz

Peekaboo Kidz
812,559 回視聴 - 4 年前
1:01

Sunscreens - What is UVA and UVB?

skinexpertstalk
1,042 回視聴 - 11 年前
7:44

UV light kills viruses. Why isn't it everywhere?

Vox
1,286,343 回視聴 - 11 か月前
2:17

UVA vs UVB Sun Protection Guide #uva #uvb

Sungrubbies
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1:19

What is UV and how does it affect us?

Met Office - Learn About Weather
102,683 回視聴 - 7 年前
1:57

What is the difference between UVA and UVB rays?

Premier Health
7,008 回視聴 - 11 年前

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0:56

What is UV DTF?

Ink Experts
59 回視聴 - 2 日前
3:44

How UV Rays Damage Skin

DocUnlock
185,614 回視聴 - 6 年前
4:46

How UV Causes Cancer and Aging

Veritasium
566,956 回視聴 - 6 年前

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1:58

Ultraviolet (UV) Can Kill Bacteria & Viruses – Learn The Basics

Bulbs.com
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UVA Rays vs. UVB Rays | Skin Care Guide

Howcast
19,651 回視聴 - 11 年前
6:05

Science behind UV light! - Ultraviolet radiation UVA UVB and UVC light

DestructiveCreativity
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1:29

What's the deal with UV?

Australia Wide First Aid
278 回視聴 - 9 か月前
2:30

What is UV Light Disinfection Technology?

Acuity Brands, Inc.
3,197 回視聴 - 3 年前
2:03

Researchers test UV light to make indoor air safer

CBS Evening News
6,839 回視聴 - 2 年前
1:01

How Does Ultraviolet Light Affect Your Skin?

Science Channel
21,267 回視聴 - 6 年前
1:10

What is UV-C Disinfection? A Method for Chemical-Free Disinfection

Imperial Dade
542 回視聴 - 2 年前
3:01

Doctors recommend sunscreen with UVA and UVB protection

Washington University in St. Louis
2,394 回視聴 - 15 年前
1:57

Are UV rays stronger on cloudy days? | Verify

WUSA9
5,244 回視聴 - 1 年前
1:02

What is UV-C Light?

LindEquipment
191 回視聴 - 4 年前