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J&T Express (Chinese: 极兔速递) is an international delivery company founded in August 2015 in Jakarta, Indonesia. Its core business is express services and cross-border logistics. Its core business is express services and cross-border logistics.
J&T_Express_3x3.png (194 × 40 pixels, file size: 4 KB, MIME type: image/png) Summary. File information Description Logo used by the J&T Express PBA 3x3 team.
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In electromagnetism, current density is the amount of charge per unit time that flows through a unit area of a chosen cross section. [1] The current density vector is defined as a vector whose magnitude is the electric current per cross-sectional area at a given point in space, its direction being that of the motion of the positive charges at this point.