常见例句雙語例句2 tons of boiler is one of the most common coal-fired boiler, using bar grate, grate run small resistance; Link good cooling effect, low failure rate; Grate leak less fuel.2噸鍋爐是最爲常見的一種燃煤鍋爐，採用橫梁式爐排，爐排運行阻力小； 返回 boiler grate bar