ONE of the most promising alternatives to plastics made from oil is polylactic acid (PLA).

能够代替石油来制造塑料的最好选择是聚丙醇酸（聚乳酸纤维）。

The product is made from polylactic acid modification wollastonite composite material.

该制品是以聚乳酸改性硅 灰石复合材料为原料制成的制品。

Objective: To study the release of ciprofloxacin polylactic acid microspheres in vitro.

目的：考察环丙沙星聚乳酸微球的体外释药性能。

The synthetic methods of polylactic acid are reviewed, its status and application are introduced.

综述了聚乳酸的合成方法，介绍了其生产应用现状。

Methods : PGA non woven mesh was put into the mold of trachea cartilage ring and enforced with polylactic acid.

方法：按气管软骨环的形状制备模具，将聚乙醇酸无纺网置于模具中，用聚乳酸塑形；