Hydrogen-powered drones have several advantages to lithium ion-powered ones, says Dr Enass Abo-Hamed.
from BBC News - Home https://ift.tt/2Qyv76b
Two separate funding proposals failed on Friday as mass lay-offs and sweeping cuts loom over the government. from BBC News https://ift.tt/...
نشرت بواسطة:salman 5:23 PM في BBC News - Home لاتوجد تعليقات
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