厄克特先生使用了假名，警方的调查因此受阻。Police have been hampered by Mr Urquhart's use of bogus names.入侵行动因遭遇到了出乎意料的顽强抵抗而受阻。The invasion was held up by unexpectedly stout resistance.道路由于车辆过多而受阻.The street was closed off for too many c...
Not for circulation: newspaper, periodical, reference book, cyclopaedia , CD - ROM and video cassette recorder.不提供外借的资料: 报纸 、 杂志 、 工具书 、 百科全书 、 CD -ROM 光盘、录像带....
To prove whether or not the fissile spiral type artificial head replacement conforms to biomechanics principles.目的:论证分体螺旋式人工股骨头置换的合理性.Method The biomechanics method of photoelastic experiment was em - played.方法采用生物力学光弹性实...