求翻译：在施工非池体结构过程中，根据环境、气候、工期及施工方法等因素，由承包人决定是否采用混凝土外加剂。而用于井体构筑物等的C25S8级别以上的混凝土，必须使用混凝土外加剂，并应符合下列规定是什么意思？

In the process of construction of non-cell body structure, according to factors such as environment, climate, duration and construction methods, by the contractor to decide whether to adopt concrete admixtures. Well body structures such as c25s8 level more concrete, you must use concrete admixtures,

Non-pool during the construction process, structure, depending on the environment, climate, scheduling and construction methods, and the factors that determine whether a contractor concrete admixture. They are used to pound body structures, etc. 25 C S 8 level and above must be used for concrete, co

In constructs in the non-cell body structure process, according to factors and so on environment, climate, time limit for a project and job practice, by the contractor decided whether uses the concrete admixture.But uses in the well body construction and so on the C25S8 rank above concrete, must use

In the course of construction of non-pool structure, based on factors such as environment, climate, duration and method of construction, the contractor to decide whether the use of concrete admixtures. For well more than C25S8 level of body structures, such as concrete, concrete admixtures must be u

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