Studying the condition about the natural partial order on it. And characterized the homomorphism between regular semigroups, discussing the conditions about the special homomorphism image.
给出了有关自然偏序的的两个重要条件刻划，对具有逆断面的正则半群之间的同态进行了刻划，讨论了具有逆断面的正则半群的特殊同态像的条件。
We may also prescribe natural therapy or acupuncture, depending on the condition. sometimes we prescribe special kinds of baths or saunas or physical exercises.
根据患者的病况，我们可能会采取自然疗法或施以针灸，有时处方也可能是浸泡特殊的温泉或做运动。
Sichuan Basin is characterized by special architecture, complicated reservoir forming condition, rich natural gas and poor oil resources.
四川盆地结构特殊、成藏条件复杂、气多油少。
Sichuan Basin is characterized by special architecture, complicated reservoir forming condition, rich natural gas and poor oil resources.
四川盆地结构特殊、成藏条件复杂、气多油少。
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