I came in late this morning.

These systems are often cheaper to install than conventional horizontal ducting and have the advantage over above-floor ducts that they are unlikely to be damaged by tractors unloading the flat store.

a tartarlike deposit on the teeth

In 1940 he received a B.S. in electrical engineering from Chiao-t'ung University in Shanghai and went to work as an engineer at the Central Radio Works in Kuei-lin.