Others are kept locked in small , concrete enclosures , spending their days in perpetual darkness . They occasionally jump up on their hind legs to peer through narrow , slit windows , to get a rare glimpse of daylight .
About a year ago I picked up a small bench-top cnc machine for making circuit boards and electronics enclosures .
大概一年前为了制作电路板和电子附件,我学习使用小型桌上型的电脑数值控制机器。
In total , the observers collected 208 hours of observations in the enclosures and 73 hours in the holding areas .
最后观测人员总共得到了208个小时的围场观测数据和73小时的等候区观测数据。
The deal is meant to ensure that major components for the planned texas wind farm - including the towers , some enclosures for the turbine and the giant turbine blades - would be supplied from the united states .
No graphics cards , for instance , since these machines never power a screen . And no enclosures , because the motherboards go straight into the racks .