Evaluating P&L Statements It is vital to compare income statements from distinctive accounting periods. The rationale driving this is always that any improvements in revenues, functioning prices, exploration and advancement (R&D) spending, and Web earnings as time passes tend to be more meaningful than the quantities on their own. “盈亏修正”主要指的是交易成本，通常在投机交易中占比较小... https://ralpha963osw6.wikifordummies.com/user