The phrase 'in two folds' is correct and usable in written English.
You can use it when referring to an object that has been folded in two, or an action that has at least two components. For example, "I divided the paper in two folds to create a smaller sheet."
These doors are not to be inlaid (cerostrata), nor in two folds, but single folded, and to open outwards.
The stability is then investigated in two folds.
The proposed approach improves upon the existing literature in two folds: reduce the computational burden and provide an algorithmic procedure that would seamlessly connect the state estimation and parameter estimation parts of the observer design.
The advantages of the proposed HSAE lie in two folds: (1) it employs Hessian regularization to well preserve local geometry for data points; (2) it also efficiently extracts the hidden structure in the data by using sparsity constraints.
The characteristic of the proposed CNC-ABC exists in two folds: one is that it enlarges the search scope of the solution by utilizing cyclic exchange neighborhood techniques, speeds up the convergence of artificial bee colony algorithm (ABC).
Our contributions are in two folds.
RHA contributes in two fold of effects in concrete or mortar; i.e. filler effect and pozzolanic effect.
Synergy tests were performed in 96-well microtiter plate containing two antimicrobial agents in two fold dilutions dispensed in a checkerboard fashion on the day of the assay.
In this model we use guanine frequency in two fold synonymous sites instead of GC-content of the genome as an independent variable.
PEITC at concentrations of 200 μM to 12.5 μM (in two fold serial dilutions) was added to the media and the cells incubated for 7 minutes at 37°C.
Striatal B with different concentrations (0.04 to 20 μg mL−1, two fold dilution) was coated to the microtiter plate and then bound to pAbs with serial dilutions (1 50 to 1 6,400, stepwise in two fold dilution).
