高斯公式:
若空间闭区域 Ω \Omega Ω 由光滑的闭曲面 Σ \Sigma Σ 围成,则 ∫ ∫ ∫ Ω ( ∂ P ∂ x ∂ Q ∂ y ∂ R ∂ z ) d v ∮ ∮ Σ P d y d z Q d z d x R d x d y \int \int \int _{\Omega}(\frac{\partial P}{\partial x} \frac{\p…
JWT 1.什么是JWT JSON Web Token (JWT) is an open standard (RFC 7519) that defines a compact and self-contained way for securely transmitting information between parties as a JSON object. This information can be verified and trusted because it is digitally s…