But all this depend on the steady, safe and highly efficient running of ground source heat pump unit.
但是，这又依赖于热泵机组的稳定、安全、可靠、高效的运行。
It is an important measure that preventive maintenance be strengthened in keeping the safe and highly efficient operation of medial equipment for maximum social and economic benefit.
加强预防性维护是保证医疗设备高效、安全运行的一项重要措施，使其社会效益和经济效益达到最大化。
Microbial preservation technology, a new hopeful substitute of traditional technology in food preservation has been confirmed to be a natural, safe, residue free, and highly efficient method.
传统的食品保鲜技术将逐步被一种全新、无毒、高效的保鲜技术-微生物保鲜技术所取代。
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