单词	extra track
释义	extra track 额外磁道
随便看	positive grid current positive-grid multivibrator positive grid multivibrator positive grid oscillator positive-grid oscillator positive-grid oscillator tube positive ground positive grounded battery positive ground system positive group positive growth positive g tolerance positive-g tolerance positive guarantee positive guard band positive half trajectory positive half-wave positive half wave positive halogen positive haptotropism positive helicity positive heliotropism positive hemi-orthodome positive hemipyramid positive Hermitian operator 麘麙麚麛麜麝麞麟麟凤一毛麟凤龟龙倒戈倒扁儿倒手倒打一耙倒扣倒找倒把倒抽一口气倒拉刺倒持泰阿