利用田间试验试制、改进并验证了犁体。
Making use of field experiment, bottom plow is designed and improved.
专门用于中间试验和产品试制的模具、工艺装备开发及制造费。
Expenses for the development and production of moulds and technical equipments used exclusively for intermediate experiments and trial production of products.
通用锚杆荷载试验包括对保护性试制锚杆进行的拉拔试验以及对锚杆成品进行的徐变、性能和验证试验。
Common anchor load tests include pullout tests performed on sacrificial preproduction anchors and creep performance and proof tests performed the production anchors.
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