而采用JSD电缆输送机敷设电缆的施工工艺，既安全可靠又节约成本，而且能够有效保证工期和质量。
However, the construction technology with JSD cable conveyer is used to lay cable, which has many advantages such as safety, saving cost, ensuring period and quality.
提出必须因地制宜、灵活地选用预支护方法，达到既保证安全施工，又降低工程造价的目的。
It is shown that the timbering beforehand methods must be chosen carefully and adjust measures to local conditions. As a result, safe construction and lower cost are ensured.
提出必须因地制宜、灵活地选用预支护方法，达到既保证安全施工，又降低工程造价的目的。
It is shown that the timbering beforehand methods must be chosen carefully and adjust measures to local conditions. As a result, safe construction and lower cost are ensured.
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