proper mixing

Road-paving asphalt meeting the required specifications can be prepared by mixing coal tar with fluid catalytic cracker ( FCC) bottoms and whole used tire, excluding steel belts, at proper ratios.

把煤焦油、流化催化裂化（FCC）重油和全旧轮胎（除去钢带）按合适的比例混合，就可得到符合规格要求的铺路沥青。

There should be proper condition of air circulation in mixing room and in construction site.

配料及施工现场地应有适当的通风条件,施工期间应打开门窗通风,下班时应及时关闭.

The relative prevention measures mainly included proper mixing of pit mud, adequate regulation of liquor-making techniques and strengthening pits management etc. ( Tran. by YUE Yang)

防治措施主要有合理和制窖泥，调节酿酒工艺和加强窖池管理等。

His proper pride ought to have kept him from mixing with such matters.

他的自尊心本应不让他和这样些事情搅在一起.

Therefore, it is only and proper to consider transplant the application of cement-soil mixing in a dike to a earth dam, to form some kind of impervious curtain, in order to reduce the seepage volume, and bring down the water gradient on the downstream exit.

因此，考虑将水泥土的应用从堤防移植到土石坝上来，形成水泥土防渗墙，以达到减少渗流量，降低渗透坡降的效果。