方法：用正常人阴性血清按不同稀释倍数梯度稀释HIV抗体阳性血清后，制备出弱阳性血清。
Methods: Diluting ordinary person's serum by grads' multiple, prepared the serum showing HIV-Ab feeble masculine in screening test.
将发酵液直接稀释不同倍数后进行检测，从而确定一个较合适的稀释倍数为500，并据此计算总亿和产率。
The fermentation broth is assayed by diluting it to different multiple, and a more appropriate desaturation multiple: 500 was determined for calculating the output and yield.
为了扩展竹材的热解产物——竹酢液在保鲜包装材料方面的应用，以竹酢液及其不同倍数的稀释液为原料，观察其对不同类型果蔬的保鲜作用。
The bamboo vinegar and its different multiple diluents were taken as a raw material to study the effect of bamboo vinegar on different type of fruits and vegetables.
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