Steel watchband (especially gold or gold watchband) can be a good number of node number, take table after carefully checked whether each section of new and original, in order to avoid being stolen.
钢表带(尤其是金表或间金表带)可以先数好节数，取表后仔细检验每一节新旧程度是否与原先一致，以防被偷换。
Only a few number of samples have cerlified value of Au-Ag contents. The test methods of gold and silver were discussed in the second section. The comparison and application of the classical fire as…
第二部分讨论了金和银的测试方法，较详细地讨论了古典火试金、容量法和化学富集原子吸收法的对比及应用。
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