During a visit to a Boeing aircraft maintenance facility in Shanghai, Secretary Clinton focused on issues important to the U. s. side in this week's economic talks.
克林顿国务卿在访问上海一个波音飞机维修设施时，重点谈论了在这个星期的经济会谈中对美国至关重要的问题。
It is a type of economical aptitude pump unit which usually save energy over 50% than general models with convenient maintenance, simple adjustment, low maintenance charge on the safe side.
该机调参简易、维护方便、安全可靠、维护费用低，与常规抽油机相比节能50%以上，是一种智能型的节能抽油机。
The effect of vehicle maintenance and drive on the brake bias and side slip is discussed in this paper.
本文论述车辆维修、驾驶对制动跑偏、侧滑的影响。
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