分类：教育/科学-外语学习
问题：帮忙看一段话，谢谢Thedarkdaysofenergy
The dark days of energy-hogging, poorly toleranc cast parts are over. A new casting method dampens vibration and uses less energy during production. The technology is called cast-totolerance (CTT) synthetic-quartz-composite casting and the magic lies in the mixture.The darThe dark days of energy-hogging, poorly toleranc cast parts are over. A new casting method dampens vibration and uses less energy during production. The technology is called cast-totolerance (CTT) synthetic-quartz-composite casting and the magic lies in the mixture.The dark days of energy-hogging，poorly toleranced cast parts are over怎么理解？cast-totolerance (CTT) synthetic-quartz-composite和the magic lies in the mixture怎么理解？
回答：那些高耗能、铸件公差（casting tolerance）偏差的黑暗日子已经一去不复返。现已有一种新的铸造技术可以减少振荡，及在生产过程中使用更少的能源。该合成石英复合铸造技术被称为「具容错度的铸造技术」（cast to tolerance, CTT），而诀窍在于其混合物（的成份）。

原文有笔误，该作 cast to tolerance。参考如下：

Accures Casting, LLC is pleased to announce the introduction of its new polymer composite ACCURES CCT(TM) cast to tolerance technology. This new CTT(TM) casting process allows cast parts to go directly to assembly, eliminating machining and stress relieving.