"Seven Years that Changed the World" speaks directly to the heated debate about the end of the cold war.
《改变世界的七年》直接提到冷战结束后的激烈讨论。
2
When these oils are heated, their viscosity is reduced, and they can be burned directly in a diesel engine, or the oils can be chemically processed to produce fuels such as biodiesel.
当这些植物经过加热后粘稠度降低，便可直接在柴油机内燃烧，或者将部分油类经过化学方法加工为生物柴油。
3
Tube pentode with directly or indirectly heated cathode.