England had withdrawn into their shell with the luxury of an early lead, allowing the Americans to pin them back in their own half.
早早领先的英格兰龟缩防守，拱手将美国人引入本方半场。
Pump wear parts are mainly drive shaft and bushing, passive gear center hole and shaft pin, pump shell lumen and gear, gear face and pump cover, etc.
齿轮泵的磨损部位主要有主动轴与衬套、被动齿轮中心孔与轴销、泵壳内腔与齿轮、齿轮端面与泵盖等。
Between the regular inspection section and the pin belt between the watchband shell and spring bolt, appear to prevent out or wear, often sprang, will be trimmed or replaced in time.
定期检查表带节之间和壳带之间的销钉以及弹簧栓，防止有窜出或磨损的情况出现，经常窜出的，就要修整或及时更换。
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