 ከተለመዱት የኃይል ምንጮች ጋር ሲወዳደር አነስተኛ ኃይላቸው በእነዚህ 'ማይክሮ ኤነርጂዎች' ላይ ከፍተኛ ኢንቬስት የማድረግ ዋጋ የለውም ።
The efficiency for generating secondary electrons is very low at these low beam energies, and I like to characterize these low-energy images as "chalky."