词汇	键关
释义	键关 jiàn guān喻入门的途径。犹闭门。鍵關
随便看	approximate surveying approximate symmetrization approximate symmetry approximate synthesis approximate synthesis of linkage mechanism approximate table approximate technique approximate technology approximate telephone approximate test approximate text addressing approximate the distance approximate theory approximate theory of experimental designs approximate time approximate time constant approximate time-delay state feedback approximate to approximate to one thousand approximate total approximate total differentiability approximate total differential Approximate to the standard sample approximate to the truth approximate transfer function