双等于号用于比较而不是用于设置值。
The double equal sign is used for comparisons, rather than setting values.
这项技术的使用最早出现在20世纪50年代，用于史普尼克3号人造卫星。
The technology was first used on the Sputnik 3 satellite in the 1950s.
“比格尔号”的使命是绘制海岸线地图，以用于商业及军事目的。
The Beagle was on a mission to map the coastline for commercial and military purposes.
北京方面表示，辽宁号航母主要用于训练和研究。
Beijing has said the carrier would be used mostly for training and research.
在驱动器框中，单击要用于网络驱动器的驱动器号。
In the drive box, click the drive letter that you want to use for the network drive.
双剑号：用于第三个脚注的印刷字体附注符号。
Double dagger: a typographic symbol used as a third order reference mark.
双剑号：用于第三个脚注的印刷字体附注符号。
Double dagger: a typographic symbol used as a third order reference mark.
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