A retainer shield for a split ring retains boiler tubes aligned therein and dissipates heat from a front weld thereon. The retainer shield is preferably made from about 50% chromium and about 50% nickel and is welded to one end of the split ring to assist in holding the two halves of th...
PROBLEM TO BE SOLVED: To provide a ring-shaped shield member capable of preventing occurrence of a gap between a component of the ring-shaped shield member and a substrate placement stage, and also preventing breakage of the component.佐々木 芳彦...
I have deployed the dichotomy of transparent and opaque relations for several purposes: to construct a Rousseauean typology of social interaction that draws out the political implications of various kinds of interpersonal relations; to describe different patterns of association and dissociation and their ...