during the

The combustible gases are continuously evolved (or emitted) from the surface.

Turpentine, the volatile portion of the gum that exudes from incisions in trunks of living pine trees...

An exothermic reaction is a reaction of transformation during which heat is liberated.

Considerable heat is released (or evolved) during the fermentation.

Adding benzene to such a mixture raises the freezing point and ice separates out.

These enzymes are secreted by the labial glands.

= stretching bands are prominent at 1475 cm^-1.

Of the known separation methods, gas chromatography stands out as the most mature in development.

Certain of these groups of compounds stand out as being much more active than others.

Two other bright features stand out on the surface of Venus.

The combustible gases are continuously evolved (or emitted) from the surface.

Turpentine, the volatile portion of the gum that exudes from incisions in trunks of living pine trees...

An exothermic reaction is a reaction of transformation during which heat is liberated.

Considerable heat is released (or evolved) during the fermentation.

Adding benzene to such a mixture raises the freezing point and ice separates out.

These enzymes are secreted by the labial glands.

= stretching bands are prominent at 1475 cm^-1.

Of the known separation methods, gas chromatography stands out as the most mature in development.

Certain of these groups of compounds stand out as being much more active than others.

Two other bright features stand out on the surface of Venus.

The ОН emission decreases in intensity during morning twilight and then regains its night-time value during the day.

The ОН emission decreases in intensity during morning twilight and then regains its night-time value during the day.

During the rise and fall of tide (or During tide and ebb, or During high and low tide)...

The attractive forces of the two electrons for the two nuclei exactly balance the electron-electron and proton-proton repulsions.

Usually the pressure force is balanced out by an opposing force.

Any increase in rate produced during the swing to dead centre would be exactly cancelled by an equal decrease in rate after dead centre.

The barrier serves to counterbalance these forces.

The rheostat is cut out of the circuit as the motor approaches full speed.

The transformer is automatically disconnected from the supply during the idling periods.

The early atmosphere's complete dissimilarity from that of today...

By its variation from unity the activity coefficient shows the nonideality of the solution.

Perhaps the most outstanding distinction has been found during the infective processes.

The automatic water valves open for the admission of (or to let in) water during the cooling cycle.

To preheat the gas before admission to the burners...

Valves for admitting and releasing air...

The automatic water valves open for the admission of (or to let in) water during the cooling cycle.

To preheat the gas before admission to the burners...

Valves for admitting and releasing air...

The ions were moving in the opposite direction.

This reaction goes the other way during the deposition stage.

The ions were moving in the opposite direction.

This reaction goes the other way during the deposition stage.

The gases released during the consolidation of the surrounding rock...

The metal can flow freely and evenly into a mould before freezing (or solidification) prevents further flow.

The genetic code system is breathtakingly simple.

It is a striking fact that the system's activity can be evoked by all kinds of stresses.

The development of missiles and aircraft has been astoundingly (or amazingly, or remarkably) rapid during the past thirty-five years.

The heat effect is equal in magnitude but opposite in sign to that of...

The flux linkage induces a voltage pulse that is equal but opposite to the one induced during the approach.

During the famine in Biafra the population was subsisting almost solely on the roots of the cassava plant.

Truly ancestral metazoans presumably subsisted on smaller organisms or organic debris.

During the lifetime of the catalyst each platinum atom leads to the reaction of some 20 million molecules of gasoline.

During the lifetime of the catalyst each platinum atom leads to the reaction of some 20 million molecules of gasoline.

The tension applied to the wire is varied during the winding, being reduced progressively as successive layers are applied.

During the ground runs the pilot feels out the aircraft to evaluate its adequacy.