1.
The fangs of pit vipers are long, hollow tubes.
颊窝毒蛇的毒牙是长的空心管子。
2.
But Prometheus regained the treasure, stealing it from heaven in a hollow tube.
但是普罗米修斯用一根空心管子从天府偷盗火种，再次取得了宝贵的天火。
3.
A iron bar is solid, a pipe is hollow.
铁条是实心的，管子是空心的。
4.
A bar of iron is solid; a pipe is hollow.
铁棍是实心的, 而管子是空心的。
5.
The caddis fly larvae live in protective tubes, the hollow stem of a reed,
石蛾居住在能保护身体的管子内 那管子其实是空心的芦苇茎部
6.
A hollow cylinder, especially one that conveys a fluid or functions as a passage.
管空心圆柱体，尤指用于运送液体或作为通道的管子
7.
And because it is hollow, it can be fitted together and used. for pipes to carry water.
由于竹子是空心的，还可以把它们连接起来当作管子输水。
8.
Computer Simulation of Plasma Sheath Evolution in a Cylindrical Bore in Plasma Source Ion Implantation;
空心圆管中等离子体源离子注入鞘层动力学研究
9.
London Air Traffic Control Center
伦敦空中交通管理中心
10.
RATCC (Radar Air Traffic Control Center)
空中交通管制雷达中心
11.
drag cup induction motor
空心转子感应电动机
12.
hollow cathode aluminum ion laser
空心阴极铝离子激光器
13.
air cored betatron
空心电子感应加速器
14.
CATCC (Carrier Air Traffic Control Centre)
航空母舰空中交通管制中心
15.
vacuum thermionic tube detector
真空热离子管检波器
16.
flush type screen
冲洗解堵型无中心管的环空筛管
17.
The air having been pumped out, the tube is reduced to a vacuum.
空气抽出后，管子已处于真空状态。
18.
The vacuum pumps begin sucking the air from the barrel of gun.
真空泵开始抽取电子枪管里的空气。