In my country they are called Credits or Credit Hours. My transcripts reflect "Credit Hours". If you take a course that has 3 sessions per week, then you typically get 3 credit hours for that course for the semester. It it meest 5 times a week, you get 5 credit hours. Most courses give you 3 credit hours per semester. So if you take 5 courses in a semester, then its 15 credit hours for the semester. And you may need 120 credit hours to graduate, for example. There are 2 semesters per year. Is that the same as the "Credit Unit" that you were talking about?

It is called the units. In colleges, there are quarters , tri semesters, and semesters systems. There are also lecture hours and lab hours. Two lab hours is equal to one lecture hour. In general chemistry, if it is a 2 units course with lab, then 30 hours lectures and 60 hours lab. If it is a 60 hours lecture with 30 hours lab, then it is being calculated as 2.5 units. Four semester units is equal to six quarter units, five tri-semester units. Note: The calculation is an example, the actual hours per unit should referring to the schools accreditation agencies.