| 摘要 |
<p>The sleeve (10) has surface sections (21, 22) formed at an inner shell surface (13). The surface sections form a saddle-roof-shaped body (20) and exhibits unequal side length. Angle between the surface sections of the body is greater than 90 degrees, and the angle increases towards a base (11), where the body is arranged at the inner shell surface of the sleeve. The base comprises a cone-shaped recess (12), and tip of the recess is provided in a middle perpendicular bisector (15). The shell surface is made of a silicon-carbide coating material and provided with a porous surface. An independent claim is also included for a calibrator comprising a heating device.</p> |
