It is said that the magnetite was formed by a chemical process called thermal decomposition.据说这枚陨星是在热分解的化学过程中形成的。Iron ores of greatest economic interest contain magnetite and hematite.最具有经济价值的铁矿包括磁铁矿和赤铁矿.This is because ...
Associated minerals are mainly magnetite and ilmenite, subordinately pyrite and rarely chalcopyrite.主要伴生矿物为磁铁矿、钛铁矿, 少量黄铁矿和微量黄铜矿.Iron ores of greatest economic interest contain magnetite and hematite.最具有经济价值的铁矿包括磁铁矿和赤铁矿.T...
议员席上不断有人在嘲讽和打岔.There was constant jeering and interruption from the floor.你也应该让本地议员了解你的观点。You should also make your views known to your local MP.她将竞选欧洲议会议员。She is to stand as a Member of the European Parliament....
The flywheel on the eccentric shaft can be exchanged and connected by the distensible cover.飞槽轮在偏心轴上的两端位置可以相互调换,并通过胀紧套连接.Flywheel is an important executive component of satellite attitude control system.飞轮是卫星姿态控制系统的关键执行元...
Cet é tudiant est malade depuis neuf heures du matin.这位学生是今天早晨九点发病的.Matin D . Davis , Computability, Complexity, and Languages, Academic Press, 1983.《可计算性 、 复杂性和语言》, 清华大学出版社,北京, 1989.Ce n'est pas l'heure de fai...
This will achieve greater security without unduly burdening the consumers or the economy...此举可提高安全性，而不会给消费者和经济增加过多的负担。The procedures of the assessing ought to be active, easy and practicable avoiding burdening students.评...
No abnormity was found in the metallographical analysis and hardness test.金相和硬度分析未发现明显异常组织和硬度分布.The geometrical characteristics analysis of grain is the important base of metallographical analysis.晶粒的几何特征度量是金属性能分析的重要基础.T...