In this paper, the influence of the vessel wall on the distribution of the molecular free paths was analysed.
本文首先明确了直自由程的含义，分析了容器壁对分子自由程的影响。
2
Selling point: Detoxification: This product can remove the toxin on the nasolacrimal duct and lymph-vessel, remove the free radicals, and prevent the formation of wrinkles.
销售卖点：排毒：排除眼部鼻泪管和淋巴管的毒素，清除自由基，预防皱纹的形成、。
3
Methods From 1981, the free LDP used in our department was based on the thoracodorsal vessel.