Kelly Ball
แปลว่า(Concrete Engineering) A device for determining the consistency of fresh concrete. It is sometimes used as an alternative to the slump test.
หรือคุณกำลังค้นหา Vibration, Kelly Ball, BREATHER, ACTUATOR, Jacking Force, Burr Mashers, Jacking Equipment, Block, Jo, Screen (or Sieve), BACK-UP RING, Baghouse filter