On the other hand, this trend may be further accelerated by the change in policy at the US Food and Drug Administration, which has recently conceded that amalgams may not be entirely safe. Measuring and control devices
另一方面，这一趋势可能会因美国食品和药品管理局的政策变化而进一步加速，因为其最近承认汞合金可能并非完全安全。