16

An analysis of freight rate volatility in dry bulk shipping markets

Year:
2008
Language:
english
File:
PDF, 215 KB
english, 2008
19

Design of Constant Current Source Based on Pulse Width Modulation

Year:
2013
Language:
english
File:
PDF, 263 KB
english, 2013
41

Greenhouse Earth to Air Heat Exchanger and its Research Progress

Year:
2013
Language:
english
File:
PDF, 276 KB
english, 2013