The immunocompetence of low molecular weight heparin(LMWH) derived from low anticoagulant activity heparin(LAAH), a by-product in commercial heparin production, was studied.
对比研究了低抗凝活性肝素、商品肝素及以低抗凝活性肝素为原料制得的低分子肝素的免疫活性。
Styrene-acrylic resin, a typical one among all alkali-soluble resins, has the criteria of low molecular weight, narrow molecular weight distribution, high acid value and low Tg.
在碱溶性树脂中，以低分子量、窄分子量分布、高酸值、较低玻璃化温度的苯乙烯—丙烯酸共聚树脂（简称苯丙树脂）最具代表性。
The new low molecular weight fracturing fluid, without breaking agent, is developed which is provided with lower residue and harm, and then recycled specially against low rate of permeation oilfield.
针对低渗、特低渗油田，开发出一种不需破胶剂、低残渣、低伤害、可循环再利用的新型低分子压裂液。
应用推荐