un·der·charge /ˌʌndɚ/
 (vt.)索價低于常價,不裝足夠的火藥,充電不足低的索價,填不夠量的火藥


 Un·der·charge v. t.
 1. To charge below or under; to charge less than is usual or suitable for; as, to undercharge goods or services.
 2. To put too small a charge into; as, to undercharge a gun.
 Undercharged mine Mil., a mine whose crater is not as wide at top as it is deep.


 Un·der·charge n. A charge that is less than is usual or suitable.

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 undercharge
      n 1: a price that is too low
      2: an insufficient charge
      v : charge (someone) too little money [ant: overcharge]