试制产品 meaning in English

trial product
trial-produce

Having made the great breach in the field of surplus heat refrigeration and absorption refrigeration , dy fishing vessel diesel engine exhaust system remains in the trial - product stage , and much of its performance need to enhance and study
作为在余热制冷及吸附制冷的领域中有很大突破的dy渔船柴油机尾气制冰系统，还处在试制产品阶段，还有待于研究和提高。
Having made the great breach in the field of surplus heat refrigeration and absorption refrigeration , dy fishing vessel diesel engine exhaust system remains in the trial - product stage , so its much performance need to enhance and study
作为在余热制冷及吸附制冷的领域中有很大突破dy渔船柴油机尾气制冷系统，还处在试制产品阶段，它的很多性能还有待于去研究和提高。
C . 2 - note 1 : the new product introduction program should include provisions for such programs as : quality and reliability prediction studies , pilot production , demand and capacity studies , sales and service personnel training , and new product post - introduction evaluations
注解1新产品介绍程序应包括以下程序：质量及可靠性预测计划，试制产品，需求及产量计划，销售及服务人员培训，新产品定位估计。