Abstract: The present invention provides a ceramic circuit board comprising: a ceramic substrate comprising ceramic crystal grains and liquid phase component grains; and a conductive layer to be formed as a circuit integrally formed to the ceramic substrate, wherein the ceramic substrate has a thermal conductivity of 180 W/m·K or more and the ceramic crystal grains have an average grain size of 10 &mgr;m or less. According to the structure described above, there can be provided a ceramic circuit board which has a high thermal conductivity of 180 W/m·K or more, an excellent heat radiating property and a high strength which is capable of reducing crack formation during the assembling and operation of the circuit board, and is capable of reducing short-circuit accident to be occurred in the conductive layer.

Abstract: A knitting method employing a hooked needle having a hook at one end and a knitting extension of a flexible string material fixedly coupled to the other end. The extension has a predetermined length and thickness. In the method, chain stitches are first made with the needle and transferred to the extension. The front end of the needle is then inserted into each chain stitch of the row of chain stitches, while threading over and drawing the thread of the chain stitches or another material through the chain stitch, to form a succession of crochet stitches on the need. These stitches are transferred to the extension. The latter steps are then repeated.