求翻译：由于试验中的用户终端较少，真空储存罐体积相应较小。从上述计算可以看出，在Q=1.5 L时，即可基本满足便器完全冲洗干净的需要。但在计算用水量时，取实验数值最大值Q=2 L计算，即每次冲厕用水量都为2L，以保证便器尽可能不再有二次冲洗的现象。是什么意思？

As the test user terminal in less, vacuum storage tank volume accordingly smaller. From these calculations, we can see, at the time of Q=1.5 l, you can basically meet the needs of full flush. When calculating the consumption, however, pick up experimental numerical calculation of maximum Q=2 l, that is, every time flushing water consumption is 2L, no more quadratic as possible to ensure that the toilet flushing phenomenon.