The phrase "are firstly present" is not correct in standard written English.
It is generally used to indicate the initial presence of something, but the word "firstly" is often considered unnecessary or awkward in formal writing.
Example: "The key factors that are firstly present in this analysis include data accuracy and relevance."
Alternatives: "are primarily present" or "are first present".
The main results of this experimental study are firstly presented.
Several numerical examples are firstly presented to verify the effectiveness and accuracy of the present formulation.
General dynamics of the aircraft are firstly presented, ice effects on the dynamics are characterized.
To solve this problem, two efficient heuristics are firstly presented according to the property of the problem.
The interface constitutive relations and the generalized Young Laplace equation for micropolar material model are firstly presented.
Several numerical examples are firstly presented to verify the effectiveness and accuracy of the weak form quadrature element formulation.
A series of parametric studies of numerical simulation are firstly presented in this paper and then validated by the experiments.
In this paper, seven causal loop diagrams that can deepen understanding about the feedback relationships underlying C&D waste reduction system are firstly presented.
Two parameters are firstly presented, Ep which converts the total adsorption energy into the interaction energy per AgO bond, and θdiff which measures the deviation of AgOCe bond angle from the angle of the sp3 orbital hybridization of O atom.
General principles of the vision sensor systems are firstly presented by reviewing different template matching techniques for tracking targets, coordinate conversion methods for determining calibration factors to convert image pixel displacements to physical displacements, measurements by tracking artificial targets vs. natural targets, measurements in real time vs. by post-processing, etc.
