他似乎把负号误作正号了.He seems to have mistaken a minus for a plus.出现负号的原因与 33-2 节所讲的相同.The reason for the minus sign is the same as in Section 33 - 2 .这个负号表示这个力总是和速度的方向相反.The negative sign describes the fact that this is always o...
某日, 裁缝师跟他朋友外出小酌.One day, the dressmaker and his friends went out for a drink.他请巴黎的裁缝师做衣服.He had his dress made by a Paris tailor.女裁缝师剪断垂摆下来的一条线.The seamstress cut off the dangling strands of thread....
结论:在一定浓度范围内,姜黄素通过改变hfRPE细胞的周期分布来抑制其增殖.Curcumin can inhibit the proliferation of hfRPE cells by cells cycle arrest.用高效毛细管电泳法测定姜黄素类化合物中姜黄素的含量.The content of curcumin in curcumins was determined by HPCE.姜黄粉气味芬芳,发出一种橙子和生姜的气味...
1970年，法国农场的平均规模为19公顷。In 1970 the average size of a French farm was 19 hectares.他有将近1,000公顷的草场和耕地。He had nearly a thousand acres of grazing and arable land.每年都有几千公顷的森林遭到破坏。Thousands of hectares of forest are destroyed eac...