单词	环染色体
释义	环染色体医chromosome ring
随便看	step-frame trailer step freezing step frequency step-frequency step frequency ground penetrating radar step frequency radar step frequency signal step from stepfunction step function step-function stepfunction compliance step function compliance step-function compliance step function generator step-function generator step function input step-function input step function input signal step-function input signal step function method stepfunction modulus step function modulus step-function modulus stepfunction response