The rectangular holes (114) are step holes.
The large number of through-holes are composed of large-volume through-holes and small-volume through-holes.
The plurality of holes may be either through holes or partially drilled holes.
Bolt engagement holes which are congruent in line with the engagement holes, the bolt holes, and the holes are formed in the seat.
Three of the six holes and the central hole (4) are pressure holes, and the other three holes are electrode holes (2).
The first set of vias are physically smaller than the second set of vias.
The routing vias connect all of the entry vias to all of the exit vias through junctions (a, b, c, d) spaced on the routing vias.
Since the holes (8) are communicated with the through holes (9) to ventilate, the fingers positioned at the holes (8) and the through holes (9) are easy to dry.
In the link (25), a plurality of insertion holes (39) are formed between both shaft holes (31), (32), and window holes (40), (41) are formed at the positions corresponding to respective insertion holes (39).
The long holes of the first long hole array (31) and the long holes of the second long hole array (32) are sealed with solder (8).
The long holes of the second long hole array (32) are disposed to be relatively facing the interstices between the long holes of the first long hole array (31) which are contiguous.
Upper and lower adjusting holes (111), left and right adjusting holes (112), and insertion holes (113) communicated with the left and right adjusting holes (112) are disposed on the overturning piece (11).
For example, injection holes (611A, 611B) are two adjacent injection holes among a plurality of injection holes (611), and are two injection holes that inject fuel into region (E1) and region (E2).
The through-holes of the spoke elements (20) form a first hole circle and the holes in the central part form a second hole circle.