他说有些发动机厂商不十分了解生物柴油对发动机磨损的影响程度，因此在针对生物柴油用户延长质量保证期时非常谨慎。
He said some engine manufacturers are wary about extending warranties to those who use biodiesel because not enough has been known about how the biodiesel affects engine wear.
他说有些发动机厂商不十分了解生物柴油对发动机磨损的影响程度，因此在针对生物柴油用户延长质量保证期时非常谨慎。
He said some engine manufacturers are wary about extending warranties to those who use biodiesel because not enough has been known about how the biodiesel affects engine wear.
应用推荐