coarsing中文什么意思

粗化

例句与用法

1. The plastics matrix might be exposed with under - coarsing . the cracks might appear on the coating with over - coarsing . ( 2 ) the thickness of copper coating should be over 5m for preventing coating wrinkle
   ( 2 )电镀铜时铜镀层必须具有一定的厚度，不应低于5林m ，防止镀镍后镀层起皱，从而影响镀层与基体的结合力。
2. To obtain light radar wave absorbing materials , the electroless nickel plating on hollow glass beads and mica was studied . after pretreatment of coarsing , sensitivzed , activation , and reduction , the hollow glass beads and mica powders were plated with nickel
   研究了在空心微珠和云母上的化学镀镍，尝试在微珠上镀镍制备轻质雷达吸波材料，发现空心微珠壁太薄，经搅拌和加热后破碎太多，但从形貌上看已经实现了表面化学镀镍。
3. The result reveales that the decrease of sediment transportation of the upper reaches results in riverbed scouring and coarsing on yidu reach ; the upper and lower shallow regions in shahong are separately deepened and broadened , while the thalweg in shihong is lowered , and nanyangqi is scoured and draw back … all the above may cause variation of the distribution pattern
   结果表明，来沙量减少使宜都水道冲刷，沙泓上浅区冲刷下切，而下浅区以冲滩为主，石泓深泓冲刷下降，南阳碛冲刷缩小，分流格局有发生变化的趋势。
4. Abstract : in light of thicker grain and smaller viscosity of debris flow , a segmented simulation of the debris flow with flume is presented . for the first time . more difficult resistance similarity is brought about by geometric rate without excessive coarsing and discontinuous similarity of sand grain composition in model is eliminated with different grain scale . on this basis the density similarity and sand conveying similarity are achived . the method presented is verified through a model test case
   文摘:针对水石流颗粒粗,粘性小的特点,提出了利用水槽进行分段模拟水石流的设想,首次通过几何变率解决难度较大的阻力相似问题,改变了以往过度加糙的方式;通过变粒径比尺的方法消除了模型沙级配不连续相似的问题,较好地实现了固体物质级配相似,达到了泥石流的密度相似和输沙相似.通过水槽概化模型试验实例,对本方法进行了验证
5. ( 1 ) first , metallizing abs plastics surface by chemical coarsing , metal ion absorption , metal ion reducing and chemical copper - plating . then , the copper - coating was thickened by electroplating in order to improve adhesion between following - coating and plastics matrix , and nickel was preplating . finally , ni - sic composite was plated
   ( 1 )通过反复实验，确定工艺流程：首先通过粗化、敏化、活化和化学镀铜，使塑料表面金属化，再电镀铜加厚铜镀层，增强后续镀层与塑料基体的结合力，然后预镀镍，最后电镀ni ? sic复合镀层。