Arc lightning弧形闪电
例句:The milky way is visible as an arc in the center. 银河系看上去是一个在中心的一个弧。
Electric arc电弧;通过气体的电气放电;电弧炉
Scotia Arc斯科舍岛弧;苏格兰岛弧
Aleutian Arc阿留申岛弧
Sunda Arc巽他岛弧
arc discharge电弧放电;拉弧;弧光放电;弧放电
arc sine反正弦;逆正弦;横竖弦
arc secant反正割;横竖割
arc elasticity弧弹性
arc voltage电弧电压;弧电压
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