the perpetual-motion machine of the second kind是什么意思

用法例句

The thing interesting people is that the cycle process concerns seemingly the perpetual-motion machine of the second kind.

对纯液体系统在有外场与无外场时的饱和蒸汽压进行了计算 ,并由计算结果对一个循环过程进行了讨论 ,结果显示 ,此循环过程似乎与第二类永动机有

Relationship between abnormal fetal heart rate tracing patterns during the second steage of labor and perinatal outcome;

第二产程异常胎心监护图形与新生儿结局的关系

On the relations between the second industry and the tertiary industry on a new road to industrialization;

新型工业化进程中第二产业与第三产业的关系论析

Shanghai 2010 World Expo ——Impact on Shanghai s second industry;

2010年世博会对上海第二产业的带动作用

The results show that the strength and fracture toughness of the two kinds of composites are increased by the addition of the second phases, WC and ZrO2.

结果表明:第二相WC、ZrO_2弥散分布于Al_2O_3中可明显改善复合材料的强韧性;Al_2O_3-WC-ZrO_2和Al_2O_3-WC陶瓷材料的强度分别为820MPa和510MPa,韧性分别为8。

Coarsening of the second phase in directionally solidified Al-Bi monotectic alloys;

定向凝固A1-Bi偏晶合金中第二相的粗化行为

Relationship between the second phase and R phasetransformation in NiTi(X) alloys;

NiTi(X)合金中第二相与R相关系研究(英文)

The results show that adding Nb to HS690 filler metal will improve the quantity and morphology of the second phase(Nb,Ti)C in grain boundaries,the condition of grain boundaries and DDC susceptib.

结果表明,在焊接工艺条件相同的情况下,采用向HS690焊丝中添加Nb的冶金方法能够调整晶界处第二相(Nb,Ti)C的数量和形态,晶界条件得到改善,HS690熔敷金属抗DDC的能力得到明显的提高。