1、
represents a single-pole, single-throw switch. right-click to open and close the switch.
表示单刀单掷开关。右击可断开或闭合开关。
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2、
represents a single-pole, single-throw switch. switch can be specified as open or closed.
表示单刀单掷开关。可指定开关为断开或接通。
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3、
finally a single-pole single-throw (spst) switch is developed for dual-polarized system.
最后为因应双偏极化系统需求，也研制出一个单刀单掷微波开关。
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