We will carry out a full range of key energy-saving projects, including upgrading of low-efficiency coal-fired industrial boilers and furnaces and combined heat and power facilities.
全面实施低效燃煤工业锅炉（窑炉）改造、区域热电联产等重点节能工程。
2
The low utilization efficiency has resulted from the adoption of some traditional Chinese irrigation methods.
利用效率低的原因是采用了中国一些传统的灌溉方式。
3
Too much pressure may account for your recent lowefficiency in study.