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 eastern Guangdong province is metallogenic region of tin, tungsten, silver, iron, copper, lead, zinc, molybdenum deposits.
粤东地区是锡、钨、银、铁、铜、铅、锌、钼等金属元素的成矿区。
Whether brushed silver, gold or tungsten, or featuring a diamond, "MANGAGEMENT" rings are, like women's, all down to personal taste.
无论是镀银、金、还是钨、亦或是镶钻，在“MANGAGEMENT”，总有一款适合您。
Mineral resources, varied but limited in amount, include silver, gold, uranium, and tungsten.
金属矿物种类多但数量有限，包括银、金、铀、钨。
The four main industries are tungsten, rare earth, copper and silver tin.
主导产业有，钨业、稀土业、铜业和银锡业四大产业。
The silver-tungsten and silver-nickel graphite concocts with high properties pre-sintered tungsten skeleton have been made through a lot of experiments.
通过大量试验，制成了高性能预烧钨骨架银钨触头和银镍石墨触头。
After more surges, the silver completely melted away, leaving only the tungsten core with its thin copper plating.
更多浪涌后，银板完全熔化，只留下带薄铜板的钨核。
Ltd Electrical Alloy Company of which the main products involve tungsten-base contact material, integrated contact, silver-base contact material. SF6 breaker contact, copper-graphite contact etc.
其主导产品有：钨基触头材料、整体电触头、银基触头材料、SF 6断路器电触头、铜-石墨触头等产品。
Ltd Electrical Alloy Company of which the main products involve tungsten-base contact material, integrated contact, silver-base contact material. SF6 breaker contact, copper-graphite contact etc.
其主导产品有：钨基触头材料、整体电触头、银基触头材料、SF 6断路器电触头、铜-石墨触头等产品。
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