- Total silicon loss can equal 50% at this step .
- Average grain output per mu has reached 1,300 jin .
- In steady flow, mass flux is constant .
- We must cut down on the amount of material we use .
- This quantity is called the universal gas constant .
- Many of the deposits are too small, too impure .
- Pennsylvania sits on 35 billion tons of coal .
- The strain vector is a scalar quantity .
- They give off discrete amounts of radiant energy .
- Everybody contributes his ideas and his strength ...