Sam在月球上孤独地工作了三年，负责监督自动收矿机从月球的表层提取氦- 3。
Just wrapping a three-year solitary stint on the moon, Sam is charged with overseeing the automated harvesters which extract helium-3 from the lunar regolith.
采用三种实验装置(介质阻挡放电装置、空心阴极放电装置和彭宁放电装置)分别测量了不同压强范围内氦等离子体的发射光谱。
The emission spectra of he plasma were measured by using three types of experiment devices: dielectric barrier discharge device, hollow-cathode discharge device and Penning discharge device.
认为氦原子具有三个以上的自由度，将会导致错误的论断。
To assign more than three degrees of freedom to a helium atom would lead to incorrect predictions.
应用推荐