Sentence examples for difficult to be observed from inspiring English sources

Compared with the flame pulsation, the large-amplitude combustion oscillation in scramjet combustor is indeed unfamiliar and difficult to be observed.

This method is advanced in revealing all possible reaction pathways including minor pathways that produce toxic byproducts but are difficult to be observed by experiments.

HE also darkens the input image, making its details difficult to be observed.

The cracks were all of modest opening and difficult to be observed.

When the concentration was increased to 40 mg/L, the egg envelope surface became turbid and difficult to be observed.

The anode buffer layer (MoO3) is as thin as 3 nm that it is difficult to be observed.

However, at this time, it is difficult to explain why such phenomenon is observed.

Type I behavior, which is difficult to achieve with multilayer structures, is observed.

Frequently, a tendency to more severe or 'difficult to treat' asthma is observed.

In the case of highly interacting Pglass/polymer (i.e., polyamide 6) hybrids, counter-intuitive properties that are difficult to explain are often observed.

Firstly we believe microscopic topology, although difficult to observe, is fundamental to neural function.