Positive results obtained with the kits are reported to the Health Department but are considered preliminary, and must be confirmed by a different test that requires a blood sample.
试剂盒检测出的阳性结果会被报道到卫生部门，但只是作为初步结果，还需要对血液样本进行其他的检测以确定检验结果。
Preliminary results indicated that this composite column could quickly and efficiently selected suitable SPE packing and eluate for sample, which lay the foundation for the realization of online form.
初步结果显示，此复合柱可针对样品快速有效的选出合适的固相萃取填料及洗脱液，对后期的在线形式的实现奠定了基础。
This paper reported the extraction and the preliminary determination of flavonoids in sweet potato leaves and stems by UV-spectrophotometry using rutin as comparison sample.
通过对甘薯叶、茎中的总黄酮含量进行了提取，以芦丁为对照品，用紫外分光光度计对其含量进行了初步测定。
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