This was sod's law: when the spare tyre is in use, you will have a puncture.这真是墨菲法则：一用备用轮胎，保准扎孔。Conclusion: SOD cnd abate the ischemia - reperfusion injury of myocardium during CPB at high altitude.CPB后A组 心肌组织发生了更明显...
Thus continuous coiler unwinds the wire from immediately preceding block to give a dead cast coil.这样连续缠卷装置能展开刚刚从前一鼓轮处获得的金属线,并将其固定缠绕.As the liquidity bubble unwinds, their currencies should weaken and inflation should acc...
他测出了超声波穿过骨头的速度。He measured the speed at which ultrasonic waves travel along the bone.超声波扫描显示她怀了双胞胎。Ultrasound showed she was expecting twins.大多数处于妊娠期的妇女将被建议接受超声波检查，不过这不是强制性的。Most women will be offered an ultrasound scan ...
沙砾覆于铁质土层与砂砾层之上.Gravelly - sand over an iron - pan and gravel layer.小石头、砂砾层也可用来做隔绝层,以保持水分,降低土壤的温度.Pebbles and gravel also insulate the soil to keep surface temperatures low and preserve water.古河谷的边缘地带,往往缺失底部的河床相砂砾层.The ed...
在多西特海岸的岩石上,就可以看到数以千计的菊石.Thousands of these can be seen in the rocks on Dorset Coast.随着小菊石的生长,它会长出新的腔,然后将原来的腔封闭起来.As the young grew larger it grew a new chamber and sealed off the previous one....