The tug is towing three barges.那只拖船正拖着三只驳船....barges, with their sails ruddy brown from regular dressing of ochre.船帆由于经常涂染赭石变成了淡红棕色的游艇Heavy goods could be brought up-river in barges.较重的货物可用驳船运到上游。The seagulls swirled in ...
建立了砂轮的球基渐开螺旋面方程和分度球面螺旋线方程,给出螺旋运动参数、螺旋线导程.The mechanism of grinding internal gear of spherical worm emery - wheel is researched.正圆锥螺旋面是正圆柱螺旋面被同轴正圆锥面截得.The ortho cone helicoid was used interrsect intercept by the ortho con...
Treatment, though - whether it's chemotherapy or immunotherapy - will tilt the odds in her favour.不过,治疗一下 -- 不管是化学疗法还是免疫疗法 -- 总会使情况对她有利.Extravasation of antineoplastic agents is one of the most common complications ...