The phrase "as twice" is grammatically correct and can be used in written English.
It is typically used to compare two quantities or actions. Example: "I can eat as twice as much pizza as my sister can."
It has caused as twice as high improvement in the surface hardness compared to the conventional PIII.
These same studies suggest that programs including a cognitive component are as twice as more effective in reducing recidivism rates.
Strength of tension parallel to grain is nearly as twice as that of compression parallel to grain.
Personally, I couldn't finish it as I found it at least as twice as frightening as Amanda.
The number of non-cough segments was set as twice as the segments that contain cough.
As often as twice a day, back then, I was eating a deli sandwich.
As such we are able to estimate the uncertainty from two runs as twice the range.
For the first couple of years, I saw my kids as often as twice a week.
The engineer sees the glass as twice the size it needs to be".
The unsolicited messages go out from Congressional offices as often as twice a month.
He faces a fine as high as twice the amount he stole.
