实现机床仿真功效的多种途径（Multiple ways to realize the simulation efficiency of machine tools）.doc

实现机床仿真功效的多种途径（Multiple ways to realize the simulation efficiency of machine tools） Cultivate 1. form of cultivation (1) Tian Tian Han develop develop cockles should be selected in the middle and low tide zone, develop in order to increase the feeding time of cockles, accelerating its growth. (2) develop Tang Tang Han develop cockles should be selected in the high tide zone, in order to facilitate Xiudi dam. (3) the beach surface should be fed with the North Beach surface, and the feeding rate should be lower in the low tide zone than in the middle tidal zone. 2. develop water conditions The site should be selected in the form of Tegillarca granosa lesser, the trend of open and flat terrain in the tidal flat, tidal zone according to the form of specific. Sediment with mud and sediment 80%-90% 10%-20% mud sand for the best. Temperature and salinity changes should be ecological features as possible for the temperature of 5-35 DEG C, e, C with 15-30 was the most suitable, the North should be selected in the winter without freezing sea salinity; 10-33%, 20-25% in the most suitable. In addition, in choosing to cultivate sites, we should also pay attention to avoid industrial pollution sources, such as paper mills, electroplating factories, printing and dyeing plants into the Haikou region. 3. nurturance method (1) south of Fujian, Guangdong, Guangxi, Shandong and other Han Tian, beach north is flat form field. Han Tian also known as cockles Cheng, general area for (3-5) * 0.067hm2, is (40-50) * 0.067hm2. Site selection, dig a drainage ditch around the circle, the trenching mud into a high 0.3m and 0.5-0.8m wide embankment, or inserted under the branches and bamboo and other mark. Before stocking, the hard bottom of the bottom should be loosened, and the soft bottom should be leveled, filling the low-lying area to make the site flat and free of water. If the breeding area is large, it should dig a shallow trench between Da Shucheng and the rectangular field or the field ro