房里只有算盘珠子的接连的 、 清脆的响声.Except for the sharp clicking of Chueh - hsin's abacus counters, all was still.他永远不会成为她算盘中的一枚珠子.He could never be a factor in her calculations.算盘是现代电脑的原型.The abacus is the ancestor of the modern...
These directions embody the trends of integration, intercross and qualification.可以看出沉积物搬运和底形研究的方向体现了综合 、 叉和定量这三个主要的趋势.The social cachet of some form of qualification in India is powerful...在印度,具有某种资格享有巨大的社会威望。Jack has ob...
The design of the most important part of micrometer can be seen in Fig . 2 - 28 .测微器最重要部分的设计见图 2-28.Low pressure drop. Micrometer adjustment. Flanged with threaded companion flange.具有低压降,可微调, 配有法兰等产品特点.Completed ability ...