The trigger wheel rotates with engine RPMs and causes the speed sensor, or pickup oil, to produce triggering voltage pulses that correspond to engine speed and piston position.

Meanwhile, the supply of crude oil "is responding sluggishly to the ongoing pickup in demand, largely reflecting the policy stance of OPEC," the IMF said.

The polymerization degree, crystallinity and orientation degree of the oil-flax fibers were decreased differently after the basic modification, and the dye pickup was obviously improved.