Health Information at Your Fingertips—CDC 24/7 The CDC mobile tablet application puts health information at your fingertips. It features important hea …
你被暴露大聲喧嘩。環境噪聲污染威脅聽力和健康。測量噪聲用你的智能手機使用該應用程序。這是很容易使用!這是一個聲壓級儀表(SPL)。此聲級計計算分貝的聲音(分貝,測量單位)。You are exposed to loud noises.Environmental Noise Pollution Thr …