介电常数

dielectric constant

to introduce / to lie between / between / shell / armor

lightning / electricity / electric (bound form) / to get (or give) an electric shock / phone call or telegram etc / to send via telephone or telegram etc

surname Chang

always / ever / often / frequently / common / general / constant

a constant (math.)

to count / to count as / to regard as / to enumerate (sb's shortcomings)

number / figure / several / CL:個|个[ge4]

frequently / repeatedly