重要的是，中部非洲和非洲之角的国家要加强急性弛缓性麻痹监测，以便快速发现脊灰病毒的输入情况并便于及时采取应对措施。
It is important that countries across central Africa and the Horn of Africa strengthen AFP surveillance in order to rapidly detect any poliovirus importations and facilitate a timely response.
白天摄影大致只需要一张18%灰卡，夜间摄影与之不同，没有一致公认的固定曝光值。
Unlike during daytime where the basis is (roughly) a 18% gray card, there is not really a consistent, commonly agreed upon way to expose night photos.
研究了硅灰、海泡石纤维、淤泥陶粒等对保温砂浆力学性能的影响，以提高保温砂浆的抗压强度，使之可用于屋面保温工程；
The mechanical strength of the mortar was enhanced by employing silica fume, sepiolite fiber and silt ceramisite, so that it could be used in roof insulation engineering.
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