| 摘要 |
<p>A LANCE WHICH MAY BE USED TO ESTABLISH A LONG COHERENT GAS JET WHICH INCLUDES A PRIMARY PASSAGEWAY (2) HAVING A CONVERGING / DIVERGING NOZZLE (3), AND TWO RADIALLY SPACED SECONDARY PASSAGEWAYS (7,8) FOR ESTALISHING A FLAME BARRIER, EACH OF THE PASSAGEWAYS COMUNICATING WITH AN INJECTION SPACE (6) DEFINED BY A PROTECTIVE JACKET (9).(FIGURE 8)</p> |
