Abstract: By microsublimation, the powder of Bombyx batryticatus was first proved to contain a lot of sublimation, and the sublimation takes on the fmstwork under the microscope.
首次
微量升华法证
了药材白僵蚕中含有大量的具有升华性质的化合物，
显微镜下呈现霜花状结
。
Abstract: By microsublimation, the powder of Bombyx batryticatus was first proved to contain a lot of sublimation, and the sublimation takes on the fmstwork under the microscope.
首次微量升华法证了药材白僵蚕中含有大量的具有升华性质的化合物，显微镜下呈现霜花状结。
A relatively direct method is expounded in this paper to prove the termwise differentiation of power series, and a simple method is expressed to calculate the Fourier coefficient.
较直接的方法证幂级数的和函数
域内可以逐项微分的公式；并得到了计算傅立叶系数的一种简便方法.
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