新闻FANDIS HWM100欧美进口
从高温齿轮油泵机泵密封腔中取出结垢样本进行了盐酸滴定试验。在滴定的过程中,发现高温油泵的水垢并没有像预期的那样逐渐大部分被溶解,相反只有很少一部分水垢被盐酸溶解。按照初的推测,水垢的主要成分应该是碳酸盐类和硫酸盐类,在盐酸的滴定试验中大部分是会溶解的,但是滴定试验的结果与推测不相符。因此,对水垢垢样进行了水质硬度分析。可以发现,悬浮物的质量浓度约是控制指标的5倍,而COD的质量浓度则高达控制指标的2多倍,由此可以断定COD和悬浮物质量浓度的异常是导致冷却水结垢的主要原因。
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新闻FANDIS HWM100欧美进口
亦即是不论外在之空气条件如何变化,其室内均能俱有维持原先所设定要求之洁净度、温湿度及压力等性能之特性。洁净室主要之作用在于控制产品所接触之大气的洁净度日及温湿度,使产品能在一个良好之环境空间中生产、制造,这样的一个空间我们一净称之为洁净室;材料比较洁净棚框架一般可分为三种:不锈钢方通、烤漆铁方通以及工业铝型材,顶部及可用不锈钢钢板、烤漆冷塑钢板、防静电网格帘及压克力有机玻璃等材料。周围一般都是采用防静电网格帘或是有机玻璃,送风部用均采用FFU洁净送风单元。
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新闻FANDIS HWM100欧美进口
具有优化快速、实时采样与处理的动态响应曲线,可缩小动态误差,适应高度自动化及复合测量过程中的实时控制与瞬时称重、校准同步的需要。提高安全性随着技术的发展,衡器的安全性于近期日益突出,对衡器的安全性应予以充分重视,目前至少包括以下5个方面:衡器操作的安全性,强调的是人身安全、设备安全和环境安全;衡器要具有即时判断故障及保存断点数据的技术安全措施;提高衡器的反作弊安全性,维护其的公平公正性;提高衡器应用软件的安全性,采取加密措施;针对不断升级的网络攻击与盗取行为,应充分认识到提高网络安全性的重要性与紧迫感。
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四,结晶原理简介:从固体物质的不饱和溶液里析出晶体,一般要经过下列步骤:不饱和溶液饱和溶液过饱和溶液晶核的发生晶体的生长等过程。制取饱和溶液是溶质结晶的关键,从而析出晶体的方法有两种:蒸发,使溶剂的量减少,让溶液是过饱和溶液,溶质可以自然地由溶液里析出晶体。这也就是通常所说的热结晶方法。若溶剂的量保持不变,使溶液的温度降低,让溶液达到过饱和溶液,溶质可自然地由溶液里析出晶体。这就是通常所说的冷结晶。