造成运动损伤的主要原因是准备活动不充分、技术水平不高、场地欠佳、旧伤复发、运动疲劳等。
These injuries are due to insufficient warming-up exercises, poor sporting proficiency, uneven field, reoccurrence of old injury and exhaustion.
通过将最好的PC B设计技术与易于使用的界面相结合，并将其与SOLIDWORKSCAD相连，准备体验全新的设计效率水平。
By combining the best in PCB design technology with an easy-to-use interface, and linking it with SOLIDWORKS CAD, prepare to experience a whole new level of design efficiency.
赛前心理准备是临场发挥体能、技术、战术水平的前提与保证。
Psychological preparation before competition is precondition and guarantee of bringing into play level of physical force, technic and tactics.
企业数控机床加工效率不高的主要原因涉及加工工艺技术水平、切削刀具、准备周期长短、激励措施及人才等方面。
The main reasons for low efficiency of nc machine tool include machining technology, cutting tool precision, preparative cycle, encouragement method and talents.
企业数控机床加工效率不高的主要原因涉及加工工艺技术水平、切削刀具、准备周期长短、激励措施及人才等方面。
The main reasons for low efficiency of nc machine tool include machining technology, cutting tool precision, preparative cycle, encouragement method and talents.
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