A number of substances have been used as positive contrast agents: silver, bismuth, caesium, thorium, tin, zirconium, tantalum, tungsten and lanthanide compounds have been used as contrast agents.
许多物质已被用来作为阳性造影剂：银，铋，铯，钍，锡，锆，钽，钨和稀土化合物已被使用造影剂。
The test results show that it is technically feasible to separate silver from crude bismuth by vacuum distillation instead of traditional Parke's process of desilverization(zinc desilverization).
试验结果表明，采用真空蒸馏法脱除粗铋中银代替传统的加锌除银法，在技术上是可行的。
Processes for extracting metals from the slurry and recovery rates of them, such as gold, silver, copper, antimony and bismuth, and measures of controlling arsenic pollution are discussed.
探讨了铅阳极泥中金、银、铜、锑、铋等金属回收方法与指标以及砷的污染防治措施。
A lead-base alloy enriched with silver and bismuth was obtained after separating silver and bismuth from crude lead with a continuous crystallizer.
粗铅采用连续结晶器分离银和铋后，得到一种富集银和铋的铅基合金。
The paper also gives estimation on economic benefits in comprehensive recovery of tellurium, bismuth, copper, gold and silver.
对该工艺综合回收碲、铋、铜、金、银的经济效益进行了估算。
China tin Group produces tin mainly, recovering comprehensively indium, lead, antimony, zinc, silver, cadmium and bismuth etc. various kinds of nonferrous metals.
华锡集团以产锡为主，综合回收铟、铅、锑、锌、银、镉、铋等多种金属。
The existential states of bismuth in silver filler metals is also analyzed. And the continuous course of phase transition is studied. The mechanism of the influence is revealed.
分析了杂质元素铋在银基钎料中的存在状态，以及在钎料的加热过程中铋的相变行为，从而揭示了银基钎料中铋的影响机理。
The feasibility and regularity for the removal of silver from crude bismuth by vacuum metallurgy have been investigated.
本文研究了粗铋真空蒸馏脱银的可能性及规律性。
The main metals mineral are chalcopyrite , the next clinohedrite , alpha chalcocite bornite , malachite and azurite . a little amount blende , galena incidentally ryby silver , bismuth.
矿石中主要金属矿物为黄铜矿、其次为黝铜矿、兰辉铜矿、斑铜矿及铜的氧化物孔雀石、蓝铜矿。闪锌矿、方铅矿少量，偶见淡红银矿、硫酸钮矿。
The current processes of silver-bismuth separation from their alloy are not suited to this alloy, such as blowing dust, vacuum distillation, and so on.
目前用于银铋合金物料中银铋分离的工艺，如灰吹法、真空蒸馏法等，均不适应于该物料的处理。
The current processes of silver-bismuth separation from their alloy are not suited to this alloy, such as blowing dust, vacuum distillation, and so on.
目前用于银铋合金物料中银铋分离的工艺，如灰吹法、真空蒸馏法等，均不适应于该物料的处理。
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