| 摘要 |
PCT No. PCT/CA92/00092 Sec. 371 Date Sep. 3, 1993 Sec. 102(e) Date Jan. 24, 1994 PCT Filed Mar. 4, 1992 PCT Pub. No. WO92/15437 PCT Pub. Date Sep. 17, 1992A mobile cement mixer is provided with a programmed controller that automatically causes the mixing of concrete to follow a predefined mixing regime that is interruptable by an operator but will resume the mixing regime at the appropriate stage. |
