在终端时，调用的CurveFit，可以用Polynomial()这个函数。包括pkg模式precompile()都能通过。
但是在JupyterNotebook中，就只有Poly没有Polynomial。因此导入前面编译通过的包都会报错。
julia> versioninfo()
Julia Version 1.6.7
Commit 3b76b25b64 (2022-07-19 15:11 UTC)
Platform Info:
OS: Windows (x86_64-w64-mingw32)
CPU: AMD Ryzen 5 2600 Six-Core Processor
WORD_SIZE: 64
LIBM: libopenlibm
LLVM: libLLVM-11.0.1 (ORCJIT, znver1)
Environment:
JULIA_NUM_THREADS = 8
JULIA_PKG_SERVER = https://mirrors.bfsu.edu.cn/julia/static
help?> Polynomial
search: Polynomial Polynomials LaurentPolynomial FactoredPolynomial
Polynomial{T, X}(coeffs::AbstractVector{T}, [var = :x])
Construct a polynomial from its coefficients coeffs, lowest order first,
optionally in terms of the given variable var which may be a character, symbol,
or a string.
...
两者都是一样版本的Julia。
