They also learned to use the abacus.他们还学习珠算。Except for the sharp clicking of Chueh - hsin's abacus counters, all was still.房里只有算盘珠子的接连的 、 清脆的响声.operate an abacus打算盘use an abacus打算盘She can reckon rapidly on the abacu...
密封式侧盖设计阻绝侧盖渗油所致油污问题.The sealed side cover can make the fabric free from oil stains.机器在高速运转中,针杆部极易发生渗油现象.Oil leakage often easily happens to the needle stems when machines are running at great speed....
The construction of expressways has a variety of effects on ecological environment.高速公路建设对生态环境的影响是多方面的.There are many expressways and highways passing through the land.许多高速公路在萧山穿境而过.Second, improve the coordination among...
At exploratory surgical operations, however, the unopened hydatid cyst should be excised.然而, 在探查性外科手术时, 就应该把未开放的棘球蚴切除掉.Multivesicular hydatid cyst had 3 cases, 2 lesions with wall calcification.3例病灶为多囊型, 其中2例病灶囊肿壁有钙化.How...