▎ 摘　　要

NOVELTY - The system has constant temperature water bath box provided with a water bath box portion (2), a water bath box cover (3) and a water bath box controller. The water bath box portion is formed as a sealed structure. The water bath box controller is fixed on an upper end of the water bath box portion. A sample fixing device is provided with a fixing cover (5), an adjusting bolt (6), a fixing cross frame (7), a graphene sticker (8), an insulating material (9) and a heat-resistant rubber band (10). Waterproof treatment is placed in a constant temperature water bath tank. USE - Orthogonal anisotropic solid material thermal diffusion coefficient testing system. ADVANTAGE - The system utilizes constant temperature water bath and graphene sticker to construct sample constant temperature boundary using heat insulating material to construct sample heat insulating boundary, establishes three-dimensional orthogonal non-stable heat transfer model, takes six combined random conjugate gradient method before taking stage, and realizes orthogonal anisotropic solid material x, y. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a test method for the thermal diffusivity of an orthotropic solid material. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view of orthogonal anisotropic solid material thermal diffusion coefficient testing system. Water bath box portion (2) Water bath box cover (3) Fixing cover (5) Adjusting bolt (6) Fixing cross frame (7) Graphene sticker (8) Insulating material (9) Heat-resistant rubber band (10)