The hypothesis is coherent, if speculative, and I cannot conclusively rule it out. 如果冒险一些说,这个假说是自洽的,并且我不能确定地排除其可能性。
Since injection density cannot be varied independently, it is difficult to show conclusively its effect on combustion stability. 由于不可能独立地改变喷射密度,要确定地指出喷射密度对燃烧稳定性的影响是很困难的。