Русско-английский научно-технический словарь
см. тж. а именно
• It has been (just) this research which has led to ...
• It is in this range of concentration that the anomalous wave reaches its limiting height.
• It is precisely these varied relaxation phenomena that are of prime chemical and physical interest.
• It is because of their high threshold current density that such lasers are always run under pulsed conditions at room temperature.