1 A test tube is closed at one end and open at the other.
2 They inserted a tube in his mouth to help him breathe.
3 The vacuum inside the tube caused it to implode when the external air pressure was increased.
4 Whether we like a particular piece of news or not, all we have to do is sit in front of the tube and 'let it happen'.
5 Gases produced in the reaction pass through this tube and can then be collected.
6 With the words he handed Professor Wang a tube.
7 Because the edges of the tube curve away from the film, the x-rays get scattered about, causing distortion.
8 The tornado itself is the thin tube reaching from the cloud to the ground.
9 The mayor says he'll pour money on the tube, back into the underground network.
10 The destroyer's armament consist of several small cannon, two torpedo tube and a number of anti-craft gun.
11 It passed from a capillary tube.
12 Enthusiasts behind Elon Musk's "hyperloop" proposal -- an intercity tube that speeds passengers riding in capsules at 600 miles per hour -- have taken the next step, producing a report outlying some of the big issues around the project.
13 The artist has several tubes of red paint.
14 In remodeling the bathroom, we have replaced all the old, rigid lead pipes with new, pliable copper tubing.
15 She puts a piece of plastic tubing in her mouth and starts siphoning gas from a huge metal drum.