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起始时间 00:03Introduction to Test Tubes and Holders

Test tube holder and heating

YouTubechemtaiji

起始时间 00:20Holding on to a Testtube

How to use a testtube safely

YouTubeandy schweitzer

起始时间 00:38Assembling the Holder

How To Make a TEST TUBE HOLDER! 🐜

YouTubeBRUMA Ants

起始时间 0:00Introduction to Test Tubes

Lab Safety: Test Tubes

YouTubeLHSAtkins

起始时间 00:30The First Test Tube Baby

Chapter 1 | Test Tube Babies | American Experience | PBS

YouTubeAmerican Experience | PBS

起始时间 0:00Introduction to Test Tubes

Test tubes used in microbiology laboratory

起始时间 03:52Holding Pressure Technique

Interventional Radiology Series Part 4: Skills (Tubes & Holding Pressure)

YouTubeStanford Radiology

起始时间 01:23Applying the Tube Gently

How to draw blood using a tube holder

YouTubeCenter for Phlebotomy Education

起始时间 14:18Testing and Results

Mission Unleaded: How to test children for lead with maximum accuracy

YouTubeCenters for Disease Control and Prevention (CDC)