Sentence examples for difficult to be defined from inspiring English sources
Non-point sources of traffic-related pollution become a major concern as they – compared to the point-source inputs – are more difficult to be defined or controlled.
In general, the residual stress/strain of multi-layers thin film is combined of intrinsic and thermal stresses, the thermal induced mechanical stress can be obtained using FEA but intrinsic stress which contains many uncertainties is very difficult to be defined.
The latter specifies the range which is difficult to be defined with a (simple combination of) physical amount(s).
Complexity of the genetic landscape in OS cells together with its rarity make any targeted therapy difficult to be defined.
A general criterion to guide this process is difficult to be defined, since it strongly depends on the peculiarities of the model under investigation.
This was mainly because contacts were difficult to be defined due to the young age of children, many children were in diapers, and practices followed by the personnel inside the kindergarten could not be accurately documented.
Task engagement is a difficult term to be defined but it can be recognized when it is around or missing.
Breast cancer consists of highly heterogeneous tumors, whose cell of origin and driver oncogenes are difficult to be uniquely defined.
More difficult to define is, when does an article expire?
Cameron's legacy is difficult to define because there is little that does define him.
No matter that tone of voice, whether in spoken or synthesized speech, is difficult to define: it cannot be avoided.
