排序方式: 共有100条查询结果,搜索用时 234 毫秒
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某日 ,格拉管线正在输送汽油时 ,终端拉萨分输站的进站压力和流量突然同时大幅度下降 ,初步判定为管线发生了破裂跑油故障 ,经巡线查实 ,在距该站下行方向 30 0 0km处的管线被施工的挖掘机挖破而大量跑油 ,经两昼夜的紧急抢修恢复了正常输油 相似文献
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目前我国全地形车行业面临新的机遇和挑战,产品开发与市场开拓工作对企业的发展起着关键作用.为了行业的健康发展,一方面,政府部门和行业机构应不断研究新情况,对产业进行正确引导;另一方面,各企业特别是行业骨干企业,应当重视对行业发展的研究,实施各自的产品开发与市场开拓战略. 相似文献
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通过阐述空气悬架系统中橡胶衬套的重要性和设计使用现状,总结了该类零件的设计、匹配、试验选择和采用原则;并对该类零件的性能等提出了建议,以期改进悬架系统传统的设计方法,提高整车平顺性和操纵稳定性。 相似文献
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摩托车和轻便摩托车燃油蒸发污染物排放标准探讨 总被引:1,自引:0,他引:1
在摩托车污染物排放中,大约有25%的HC是以燃油蒸发的方式直接排放到大气中的,因此控制燃油蒸发是降低HC污染的有效措施之一.目前,强制性国家标准《摩托车和轻便摩托车燃油蒸发污染物排放限值及测量方法》正在制定,有望与我国摩托车第Ⅲ阶段排气污染物排放标准同步实施. 相似文献
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在新产品开发过程中推行价值工程 总被引:3,自引:1,他引:3
简述了产品设计对产品直接成本和间接成本的影响及在新产品开发过程中推行价值工程的必要性。介绍了目标成本管理、运用价值工程进行成本功能分析及实现新产品开发目标成本控制的一般方法。 相似文献
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本文介绍了50500DWT(C)化学品/成品油轮主滑油串油的质量控制措施,重点对污染源的源头控制进行了分析,保证了主滑油的清洁度达到ISO4406 Code16/13的标准,缩短了主滑油的串油周期。 相似文献
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Electric vehicles (EVs) were recently reintroduced to the global car market. These are an improvement over their predecessors in performance and electric driving range. Although the uptake of EVs has been notable in a short period of time, most government goals for adoption have not been met. This paper reviews a growing body of peer-reviewed literature assessing factors affecting EV adoption. Several important gaps in knowledge are identified. First, there is mixed evidence of the effectiveness of government incentives in encouraging EV uptake and particularly little knowledge in regards to issues of timing and magnitude. The literature shows that public charging infrastructure is an important factor associated with EV uptake, though the direction of causality is yet unclear. Public charging infrastructure can ease range anxiety, particularly for battery electric vehicles, but there is little guidance as to the way in which government should best go about ensuring the provision of infrastructure. Lastly, the nascent EV market means that studies primarily rely on surveys about hypothetical situations. There is strong evidence that actual purchases are much lower than consumers’ stated preferences. Improving understanding of this “attitude–action” gap is important to better informing studies of EV uptake over time. 相似文献
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