directive effect

No doubt, it has a directive effect on exploratory development of petroleum in China that predicts fracture character and distributive law in low permeability reservoirs.

It is widely being discussed whether the country-of-origin rule in the Directive, although not intended as one, has the effect of a conflict rule.

Only gradually was the byproduct of the institution noted, and only more gradually still was this effect considered as a directive factor in the conduct of the institution。