较短的

Can secrete alexin of a kind of plant, can be inside shorter time kill the harmful to human body bacteria in air.

能分泌出一种植物杀菌素，可在较短内把空气中对人体有害病菌杀死。

The beat method of reducing attack on the cellulose and still obtain a bleachable pulp is to use strong acid, low cooking temperature, and relatively short cooking time.

生产纤维损失小、漂白性能好浆料最佳方法是使用强酸、低蒸煮温度、相对较短蒸煮蒸煮工艺。