Sentence examples for tests are difficult from inspiring English sources

This approach is particularly promising because striga resistance tests are difficult, expensive, and sometimes unreliable; the parasite is quarantined; and some resistance genes are recessive.

The conventional reliability demonstration tests are difficult to apply to products with competing failure modes due to the complexity of the lifetime models.

Biological hypotheses, including hypotheses about mechanisms, can often be tested experimentally, and some such tests are difficult to reconstruct in terms of causal reasoning strategies that were discussed in the previous section.

However, live tests are difficult to control and risky to both customer relations and firm creditability, and therefore, most services are designed by brainstorming or trial and error, with limited success.

However, the ACL-injured knee continues to be difficult to diagnose, given that common tests are difficult to perform on anxious or large patients or by small-handed clinicians [7, 12, 14, 24, 26, 28, 29].

We believe that the LOE test could be a useful tool for achieving better accuracy in the diagnosis of the ACL-insufficient knee when common tests are difficult to perform on anxious patients or during the examination of large patients by small-handed clinicians.

Designing and implementing truly rigorous tests is difficult, expensive and time-consuming; moreover, the results may be unfavorable.

The problem of selecting an equivalence threshold beforehand for listening tests is difficult since there are no intuitive values when dealing with opinion scales.

Access to cardiologist, but also access to diagnostic tests is difficult.

Nevertheless, due to the lack of diagnostic gold standards, accuracy of such tests is difficult to assess and more research is needed to confirm this finding.

This is not an easy challenge as experimental design and plausible hypothesis testing are difficult.