钢琴教学在高师音乐教学中占有极为重要的地位，因而如何提高钢琴课的教学质量成为钢琴教学改革的重中之重。
The piano teaching plays a very important role in normal college music teaching, so how to improve the quality of the piano teaching has become the most important thing in the piano teaching reform.
桩基础工程的质量是工程施工中的重中之重，它直接影响到整个建筑物工程质量的好坏。
The quality of pile foundation is the most important in project construction which directly affects the quality of the whole construction project.
在发动机维修中，曲柄连杆机构的维修是重中之重，它的维修好坏对发动机的正常工作和使用寿命有很大的影响。
In the engine repairs, the repair of crank rod system is very important because it affects the normal work and service life.
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