求翻译：此处的甲苯只在第一批需要用到新鲜的（包括回收甲苯），从第二批开始，将step20洗涤用的甲苯套用至此，不够的用额外的（回收）甲苯补上。每批约需补171g是什么意思？

Toluene here only need the first batch of fresh (including the recovery of toluene), from the start of the second batch, will be the step20 washing with toluene applied to this, not enough to make up with additional toluene (recovery). Each batch will take about make up 171g

The toluene is only here in the first installment will be needed for the fresh (including the recycling toluene), from the first 2, will be awarded 20 wash step with the toluene, not enough to use additional (recovery) toluene. For each batch of about 171 G

Here toluene only needs to use freshly in the first batch (including recycling toluene), from the second batch of start, the toluene which uses the step20 lavation applies mechanically here, insufficient the toluene makes up with extra (recycling).Each contract must make up 171g

Toluene is here only in the first use of fresh (including recovery of toluene), starting from the second batch, step20 of toluene detergent form at this point, not enough extra (recovery) of toluene to make up. Each batch takes about fill 171g

正在翻译，请等待...