造成电流型观测器估计误差的转子电阻不确定项，在定子电流方程中同样存在。
Although the oil spill has not affected the global crude prices for the time being, it may lead to price increases in long term as it is still uncertain how serious the accident would be, he said.他认为，尽管这次石油泄漏尚未影响到全球原油价格，但从长期来看它可能会导致价格上升，因为这次事故将何等严重仍然是不确定的。
This new work provides compelling evidence that the enormous amount of information we hold in long-term memory is not so uncertain after all.这项新研究提供了有力的证据，证明我们在长期记忆中储存的大量信息其实并不是那么不确定的。
