availability factor

But growth factor is macromolecule protein and its metabolism is faster, so its biological availability is lower which make it not feasible to use growth factor locally in tissues internal environment.

但由于细胞因子多为高分子蛋白，在生物内环境代谢快，生物利用度低，且有一定的免疫原性，这些缺点防碍了它在体内的局部应用。

The low availability of phosphorus in soils is a major yield-limiting factor in rice production.

土壤中有效磷缺乏是制约水稻生产的主要因素之一.

Objective To study the availability to repair full-thickness articular cartilage defects of the rabbits' knees with exogenous basic fibroblast growth factor ( bFGF) and sodium hyaluronate ( SHb) y intraarticular injection.

目的研究外源性碱性成纤维细胞生长因子（bFGF）与玻璃酸钠关节腔内注射治疗兔膝关节全层软骨缺损的可行性及有效性，为临床应用提供实验依据。

Another important factor stimulating the development of OSB production in Russia is the availability of practically unlimited forestry resources.

另外一个刺激定向刨花板生产量提高的因素便是俄罗斯无尽的森林资源。

The On Machine Verification ( OMV) system can enhance the availability factor of the high-grade NC equipment in effect and reduce the cost of production.

在机检测系统的使用能够有效的提高高档数控装备的使用效率，降低生产成本。