However, even that calculation may not reflect how long the particle would take to cross the Pacific, since it would not likely cross the ocean in a direct path.
然而，甚至计算也可能不会反映放射性微粒穿越太平洋所花的时间，因为它不可能径直穿越太平洋。
2
The study also shows that the ignition and combustion of boron particle lie on the resorting time and the environment temperature, and have no direct relationship with after-burning chamber's length.
The direct gene transfer systems involved the chemical method (PEG), electroporation, microinjection, particle bombardment, pollen-mediated gene transfer and other systems using various vectors.