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Mounted coupling: first in the motor shaft fitted with ring head, fitted with coupling half, and then end in the shaft and the coupling block bed fitted with Plum wrench tightening bolts (lifting shaft 3 ~ 5 mm and pre-stressed mechanical seal); and then loaded onto the other half of the coupling screw Hexagon screw must be tightened.

装联轴器：先在电机轴头上装上挡圈，装上一半联轴器，再在泵轴端和联轴器槽内装上挡块并用梅花扳手拧紧螺栓（吊起泵轴3~5毫米并提供机械密封预应力）；再装上另一半联轴器拧上内六角螺钉必须拧紧。

This special heat-treatment ensures full bearing performance and prevents the set screws from loosening during operation as the set screws can be tightened hard enough without causing broken inner ring set screw hole.

内圈螺钉孔周围经局部高温回火后，轴承获得更好的性能，可防止螺钉在轴承工作期间松脱，同时螺钉拧得紧也不会导致内圈爆裂。

Fiscal policy will be tightened further, now that pump priming is not needed to maintain economic growth. The issuance of long-term government bonds was limited to CNY110 billion in 2004, a reduction from the budgeted amount of CNY130 billion, partly so that there would be less available for capital construction.

由于保持经济增长不必是主要的动力，财政政策将进一步紧缩。2004年，政府发行的长期债券被限制在1，100亿元，低于编入预算的1，300亿元，部分原因是为了减少用于基本建设的投资。

Between 1995 and 2005, 17 nations liberalised abortion legislation,while three tightened restrictions.

下降最显著的是东欧地区前社会主义国家，其堕胎人数比率从90‰降至44‰。

If tightened money supply, excessive force will first of all drugs hurt innocent people, but these measures and more biased in favor of short-term palliatives, not easy to handle the implementation of the purposes of scale — pressure into the market too early, too late became adding insult to injury.

如果收紧货币供应量，过度使用武力将首先毒品伤害无辜的人，但这些措施和更加偏袒短期治标，不便于操作执行的目的，规模—进入市场的压力还为时过早，为时已晚成为增加伤害。

To keep potential foreign troublemakers out of the country, China has tightened up on visa issuance.

为了阻止潜在的麻烦制造者入境，中国收紧了签证的发放。

China has tightened visa requirements for foreign visitors in order to keep "undesirables" out.

外国游客的签证难度开始加大，不少人以&不被欢迎&为由拒签。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。