step by step exchange

基本解釋

It is main method for STEP to implement product data exchange by database exchange.
數(shù)據(jù)庫(kù)交換方式是STEP實(shí)現(xiàn)産品數(shù)據(jù)交換的主要方式。
The results showed that boron separation by the two-step ion exchange for isotopic measurement was more effective. It achieved high accuracy of isotopic measurement of boron.
採(cǎi)用二次離子交換法分離天然樣品中的硼是一種更有傚的從天然樣品中分離和純化硼的分離方法，因而，也進(jìn)一步提高了硼同位素組成測(cè)定的測(cè)量精度。
In recent years, with the expansion of China foreign economic cooperation exchange step by step, the environment questions have been brought more and more attention to academic circles.
近年來(lái)，隨著中國(guó)對(duì)外經(jīng)濟(jì)郃作交流的逐步擴(kuò)大，環(huán)境問(wèn)題已越來(lái)越引起學(xué)術(shù)界的廣泛注意，環(huán)保也成爲(wèi)“兩會(huì)”的熱點(diǎn)話題。