Sentence examples for reference has to be from inspiring English sources

A further problem connected with the use of the hazard index approach for the risk classification of mixtures is that a suitable reference has to be chosen.

Special reference has to be made to two particular complete sequences that were included in our evolutionary analyses: the northern white-cheeked gibbon (Nole) SAMD9 and the domestic dog (Calu) SAMD9L.

This could be helpful if, for any reason, a stored calibrant (reference) has to be used again 1 or 2 days later, although we recommend the processing of the calibrant reference in each experiment.

The different frames of reference have to be connected, even if only tangentially.

2. The standard of reference had to be a surgery or histopathological examination.

Standards of reference have to be established in dependence on follow-up time points in long-term followup after different cartilage repair procedures.

"Chris can read, but sometimes the references have to be explained to him.

Of course, songs also have to rhyme, jokes have to be funny, and cultural references have to be legible to an audience of foreign children.

First, a set of reference signals has to be selected.

For instance, in order to measure TDOAs, a reference anchor has to be chosen first [7].

Additionally, a reference group has to be defined to calculate the J-factor.