Sentence examples for were usually unknown from inspiring English sources

We have also to keep in mind that the zinc status of the cells and, hence, the adaptative mechanisms to extracellular zinc concentrations were usually unknown for sample tissues used for RT-PCR experiments or EST sequencing programs.

Especially the relationship between the distribution is usually unknown.

For practical applications, system models are usually unknown.

The cause is usually unknown, though injury may be implicated in some cases.

This minimum number of disturbances is usually unknown and must be determined from data.

They present unique geometrical forms, which are, usually, unknown in the normal plant system.

The cause of breakages is usually unknown, said Owen, who has designed several winning ocean-racing boats.

Nevertheless, the process parameters are usually unknown and are estimated from an in-control Phase-I dataset.

It is very difficult to describe this effect because the controller of the machine is usually unknown.

However, a potential source of error arises since the local composition of the flame being studied is usually unknown.

Developers of applications are usually unknown, and users are unaware of how their data are being managed and used.