crystal class

If the ionic radius and the crystal class of the additive elements were different from Ru 4 + 、 Ti 4 + , the amount of them should be controlled .

对于添加元素的离子半径与Ru4+、Ti4+相差较大，且晶型不相同的元素应控制加入量。

Summer from under the stardust clastic like snowflakes , gently softly falls on Evangeline body , became white crystal class transparent glaring marriage gauze .

夏季里下起了星尘碎屑般的雪花，轻轻柔柔地落在Evangeline身上，成了洁白水晶班透明闪耀的婚纱。

Applying principal of topotactic reaction in the same crystal class , in the presence of bivalence metal ion and preventing from air oxidizing , the dust was transferred to spinal ferrite MnFe_2O_4 . The magnetic properties of spinel ferrite MnFe_2O_4 were studies , but magnetic hysteresis loop were determined .

在有二价Mn2+离子存在及避免氧化的条件下，将平炉尘转化为超细尖晶石型铁酸盐MnFe2O4。并对其磁性进行了研究，测定了磁滞回线。

A theoretical and experimental study on strip reflection coefficient of different crystal symmetry class

不同晶体对称类的栅条反射系数的理论与实验研究

Analyzing strip reflection coefficient produced by mechanic loading , we discovered Closed-form expressions of it for different crystal symmetry class are not uniform .

在分析力学负载对反射栅的反射系数贡献时，我们发现不同材料栅条其晶体对称性是不一样的，反射系数的理论计算公式也随之改变。

BaY_2F_ 8 crystal belongs to monoclinic-symmetry class ( biaxialcrystal , space group C 2 / m , point group C 2h ) .

BaY2F8晶体属于单斜晶系，双轴晶体，空间群为C2/m。