the first perpetual motion engine是什么意思

用法例句

Downfall of the dream of the first perpetual motion engine;

第一类永动机幻梦的破灭

The first strip mini - mill in China;

中国第一座短流程薄板厂

The clinical study of freestyle positions on delivery during the first labor strage;

分娩第一产程自由体位的临床研究

Clinical obstration on promoting the first stage of the multigravidae by using of 654-2;

目的探讨山莨菪碱促进经产妇第一产程的临床观察。

Using a first-principle pseudopotential plane-wave method, the energetic, geometrical and electronic structures of point defects are calculated for B2-RuAl intermetallic compound.

采用第一原理赝势平面波方法,计算了B2-RuAl金属间化合物的基本物性及其点缺陷结构的几何、能态与电子结构,通过对不同点缺陷结构形成热与形成能的计算与比较,分析和预测了RuAl金属间化合物中点缺陷结构的种类与存在形式。

A more rational first-principle-based strength assessment system(FPB-SAS)for ship structures was proposed by the authors.

作者提出了一种更加理性化的基于"第一原理"的船舶结构强度评估系统。

The structure of the ZnO(10■0)non-polar surface is studied using first-principles slab calculations based on density functional theory(DFT).

采用基于密度泛函理论(DFT)的第一原理超级原胞模型计算了ZnO(10■0)非极性表面的结构。

First-principles Calculation for Site Substitution of 4d Transition Metal Elements in L1_0-TiAl Intermetallic Compound;

4d过渡金属在L1_0-TiAl中占位的第一原理研究

First-principles Density-functional Study of the Field Emission Properties of Carbon Nanotubes;

碳纳米管场发射性质的第一原理研究

First-principles Inverstigation on the Interfaces for Nanomultilayers Ti/TiN, TiN/CrN, and TiN(NbN)/SiNx;

Ti/TiN、TiN/CrN和TiN（NbN）/SiNx纳米多层膜界面第一原理研究