1) monoclinic phase
四方晶型
2) the four directions
四方
1.
The statistic on the climatic digits of China discover the corresponding relationships between the five Zang and the four seasons,the four directions.
对中国气象台站的数据资料进行统计 ,发现五脏与四时四方的对应关系。
3) four directions (Si Fang四方)
“四方”
1.
There are at lease two ways to express four directions (Si Fang四方) in Northern Mandarin Chinese.
北方官话表“四方”至少存在两类基本表达法。
4) tetragonal phase
四方晶相
5) square crystalloid
四方相
1.
The quality of the sol-gel system was enhanced,and the square crystalloid nanometer barium titanate powder was gained after being calcined at 700℃ by the improved c.
根据胶体的形成机理和条件,对目前的研究工艺进行优化,制备过程中不引入H+和NO3-,在提高胶体稳定性的基础上,于700℃左右煅烧获得了各向同性、粒径约20nm的四方相Ba-TiO3粉体,解决了普遍存在的BaTiO3粉体粒径细小与四方相的矛盾,煅烧温度也较常规方法明显降低。
2.
Square crystalloid nano-size barium titanate powders were prepared by an improved oxalate coprecipitation method,since the phase would go far away the square crystalloid when the powders size was reduced by traditional technics.
根据传统的草酸盐共沉淀法合成超细BaTiO3粉末易产生偏离四方相的特点,提出了一种改进的草酸盐共沉淀法制备BaTiO3粉体的方法。
6) tetragonal
四方相
1.
Hydrothermal synthesis of tetragonal barium titanate from barium chloride and titanium tetrachloride;
水热合成高纯四方相钛酸钡纳米粉末研究
2.
Sintered sample which has different amount of monoclinic and tetragonal phase at room temperature is obtained at different sintering temperature.
通过化学组成和相含量设计,采用湿混法制备了MgO和Y2O3共同稳定ZrO2粉末,在不同的温度下烧结,获得了室温下单斜相和四方相含量不同的烧结样品,用X射线峰宽化法测定并计算了粒子尺寸。
3.
The pattern of XRD illustrated that the pure perovskite phase (tetragonal) had been obtained for all samples.
XRD分析结果表明所制备的样品都生成了纯的钙钛矿结构,并且都为四方相。
参考词条
补充资料：四方晶系
分子式：
CAS号：
性质：在惟一具有高次轴的c轴主轴方向存在四重轴或四重反轴特征对称元素的晶体归属于四方晶系。四重高次轴的特征对称性决定了四方晶系晶体的二个副轴基向量和必与主轴垂直，和的大小相等，并彼此直交，即其晶胞必具有四方柱的形状，晶胞参数有a=b≠ c，α=β=γ=90 的关系。
CAS号：
性质：在惟一具有高次轴的c轴主轴方向存在四重轴或四重反轴特征对称元素的晶体归属于四方晶系。四重高次轴的特征对称性决定了四方晶系晶体的二个副轴基向量和必与主轴垂直，和的大小相等，并彼此直交，即其晶胞必具有四方柱的形状，晶胞参数有a=b≠ c，α=β=γ=90 的关系。
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