城建部门想把1.8兆瓦的机器连接到城市间的高压输电网(以节省在传输途中损失的能源)，因此这些机器需要清洁地运行。
Utilities want to hook up the 1.8-megawatt machines to the grid in the middle of cities (to save the energy otherwise lost in transit), so they need to run clean.
如果希望启用这个日志记录功能，那么 清单 1 中的 LOGGING 常量应当为 TRUE，但是如果是在手机上运行的话，应当将其设为 FALSE，因为性能损失是非常明显的。
The LOGGING constant in Listing 1 should be TRUE if you want this logging to work, but leave it FALSE when it is running on the cell phone, as the performance hit can be significant.
蓄电池是一个被动的系统，只会在主系统出现了重大的，压力损失的情况下才会自动运行。
And the accumulator is a passive system that just operates automatically based on a significant loss of pressure in the primary system.
应用推荐