The root of the problem I experienced with health information systems is a very bad data model. Evidence supporting my claim includes these observations.
在我的经历中，医疗信息系统的根本问题在于一个极其糟糕的数据模型，证据就是以下这些观察结果。
Scientific calculator supporting addition, subtraction, multiplication, division, square-root, square, cube, sin, cos, tan, Factorial, inverse, modulus.
科学计算，加、减、乘、除、开方、平方、三次方、三角函数(sin cos tan)、阶乘、求反、取模等。
The epithelium making contact with the supporting filter resembled Hertwig's epithelial root sheath.
与滤膜接触的上皮类似上皮根鞘结构。
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