Abstract: Disclosed is a radio-wave-transmissive cover of a vehicle radar, which exhibits a metallic color and is imparted with improved radio-wave transmission performance. The radio-wave-transmissive cover may include an optical film formed by simultaneously depositing an aluminum (Al) material and a low-melting-point material, such that a radio wave radiated from an antenna of a radar, for example, provided in a vehicle is transmitted. The radio-wave-transmissive cover includes a substrate, and an optical film including aluminum (Al) and a low-melting-point metal having a melting point less than the melting point of aluminum (Al) on the surface of the substrate.

Abstract: Provided are a method of injecting a visualizing material into a point in the vicinity of the Jung-Wan and a method of visualizing arrival of liquid agent in order to verify that the visualizing material injected arrives at internal organs. A point having the lowest electric resistance is found in the vicinity of Jung-Wan of the subject by using an electro acupuncture point detector. The visualizing material is injected into the point by means of an injecting instrument and then verified at least one point of the pancreas and the threadlike structures on top of the surface of the pancreas. The visualizing material is an alcian blue solution or a nanoparticle-containing solution labeled with fluorescent organic material.