1) simulant condition
模拟溶出条件
1.
Due to only the acidity of gastric juice was considered for the determination of soluble elements in toys and pencils by the standard method, the simulant conditions for the determination of soluble elements As, Ba, Cd, Cr, Hg, Pb, Sb, Se were studied, which included not only the aciditiy of gastric juice but also the influence of saliva.
国内外标准中关于玩具、铅笔中可溶性有害元素砷、钡、镉、铬、汞、铅、锑、硒的测定只考虑了胃液酸度的影响这一不足,在充分考虑唾液、胃液两种介质的影响下,建立了新的模拟溶出条件,将改进后的方法用于检测玩具、铅笔中8种有害元素,测定结果更切合实际。
2) dissolving condition
溶出条件
1.
Study of dissolving condition of silicon in potassium-calcium fertilizer by the uniform design;
利用均匀设计法研究钾钙肥中硅的溶出条件
3) simulation conditions
模拟条件
1.
Based on the theory of similitude,research was made on the simulation conditions of static description that satisfied the rule of similitude,then the simulated electrostatic field was derived to satisfy the condition for similar movements of charged particles in a simulated focusing electrostatic field,which offered the basis for expeniments about electrostatic field simulations.
依据相似理论,研究静电场描绘实验中模拟条件需要满足的相似判据,更深一步探讨了针对在聚焦电场中带电粒子运动所满足的条件,为静电场模拟实验打下理论基础。
4) conditional simulation
条件模拟
1.
Study on conditional simulation of soil water-salt spatial variablity monitoring;
水盐空间变异性监测的条件模拟
2.
Application and comparison research of artificial neural network on conditional simulation and space variability of water-salt for frozen earth;
人工神经网络在冻土水盐空间变异与条件模拟中的应用比较
3.
Uncertainty analysis of the contaminant transport fate using conditional simulation of hydraulic conductivity;
渗透系数的条件模拟对污染物运移的不确定性分析
5) digestion condensers
溶出条件(冶)
6) non-conditional simulation
非条件模拟
补充资料:塑料模具射出成型的操作条件
塑料模具射出成型的操作条件
常会有一些朋友问到我,什么样的情况下要用模温机给模具加温,什么时候又要用冷水机给模具冷却.下面是射出成型的一些条件说明,给大家参考
1. 关模压:原则上应大于塑胶射入模内的总压,以不出毛边为基准
2. 压力和速度有部分相同的关系作用于模内.目的使原料进入模内能均匀,彻底,适量的充满各角落.太低会短射,缩水,太高有毛头,过饱,粘模,烧焦,易损模具及内应力高等不良现象
3. 速度:速度的快慢决定原料在模具浇道内及成品中之状况,快有毛边,过饱,烧焦,慢了出现短射,缩水,结合不良易断等
4. 温度:原料不同,温度各异,太低溶液胶颜色不均,成品内应力增大.因温度过低增压过高,可能引起螺杆断裂,过高,产品有毛边,又因冷却产生温差,引起收缩.原料会分解,变黄,变色,易断裂.冷却时间变长,气不容易排出,会有瓦斯气.
5. 背压;螺杆在旋转加料时后退之阻力称为背压.其作用使原料在输送压缩中更加紧密.能使原料的空气,水份从螺杆后排出.使溶胶中不含影响成品表面的气体成份.低会有气泡,表面银纹.高会过热,结块,溢胶,周期长,螺杆不退.同时松退的应用很重要:背压低时,有的原料要松退,有的则不必(根据各种不同性质之原料调不止背压).背压高时务必用松退并注意距离要不介入空气及不溢胶为准则.
6. 模温高低及冷却时间的长短,影响成品的粘模,缩水,尺寸公差,表面亮度,周期等,应依实际际情况而适时调整.另压克力,PC如成品肉厚时要有模温,才不会产生气泡及应力.
说明:补充资料仅用于学习参考,请勿用于其它任何用途。
参考词条