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- 四元数EP矩阵quaternion EP matrices
- 关于四元数EP矩阵偏序的研究On Partially Ordered EP Matrix Over Quaternion Field
- 四元数一实数和一矢量的和的表达式，有四个项，一个为实数项，另外三个为虚数项An expression that is the sum of a real number and a vector and that contains four terms, one real and three imaginary.
- 四元数矩阵quaternion matrix
- 实四元数矩阵real quaternion matrix
- 百元century
- 四是fourthly
- 匝数number of windings
- 百万元million
- 他经历数年的辛劳之后成功了。He succeeded after years of toil.
- 四氟tetrafluoro
- 她已连续四年获得一等奖。She has been awarded first prize four years in succession.
- 一个熟练的技师需要数年时间才能培训出来。A skilled technician takes years to train.
- "我一周最多只能给你增加60元。" "我恐怕不能接受。""Another %2460 a week is all I can offer." "I suppose you know what you can do with that."
- 小提琴有四根弦。There are four strings on a violin.
- 一夸脱是两品脱，而一加仑是四夸脱。There are two pints in a quart and four quarts in a gallon.
- 汉语有四声。Mandarin Chinese has four tones.
- 矩阵数matrix function; function of a matrix
- 这棵树的树干有四米粗。The trunk of this tree is four meters thick.
- 全主元矩阵whole - main - factor - matrix
