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When content of Ru is lower, the structure of coat is Sn-base sosoloid.

钌含量较低时，主要为锡基固溶体。

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Ruthenium (ru) : Like platinum and palladium, ruthenium is a silvery metal that does not easily tarnish.

钌：像铂和钯一样，钌是一种不易变色的银白色金属。

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The Food and Drug Administration says it is investigating two more deaths associated with the abortion pill RU-486.

NPR: FDA Investigating Two Deaths from Abortion Pill

They've been pushing a bill in Congress that would withdraw approval of RU-486 pending a new safety review.

NPR: FDA Investigating Two Deaths from Abortion Pill

Recently-delayed approvals include a new drug designed to slow the effects of Lou Gehrig's disease, the french abortion pill RU-486, and new uses for thalidomide, which caused serious birth defects when first introduced in the 1950's.

CNN: FDA delays approval of new diet drug amid cancer concern