Results 31 to 40 of about 34,242 (171)
工程技术与管理, 2020 针对在水射流孔工艺过程中孔眼轨迹特性不明确的问题，搭建试验流程，采用不同岩样和多种水泥石开展水力喷射试验。根据经济钻速和试验结果，测试相关岩样的抗压强度和可钻性级值，确定水射流工艺适用岩样抗压强度范围和可钻级值范围。通过测量井眼轨迹，分析孔眼在水平和竖直方向的轨迹特性，提供轨迹特性曲线，为该技术的进一步研究和水射流井身设计提供依据。
勇 陈, 辉 张
semanticscholar +1 more source
The Development and Validation of the Chinese Vocabulary Levels Test
International Journal of Applied Linguistics, EarlyView.ABSTRACT In response to the increasing need for effective Chinese vocabulary assessments, this study developed the Chinese Vocabulary Levels Test (CVLT), a test designed for intermediate‐level Chinese as a second or foreign language (CSL/FL) learners, based on the vocabulary lists (levels 4–6) from the Chinese Proficiency Grading Standards for ...
Shiwei Qi, Ailan Fu
wiley +1 more source
测绘与勘探, 2020 本试验是针对哥伦比亚地区某铜矿进行的综合回收研究，对其他矿山同类型矿石的综合回收也具有一定的参考意义。
雪峰 梁 +3 more
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International Journal of Applied Linguistics, EarlyView.ABSTRACT Collaborative writing has attracted increasing attention in English as a Foreign Language (EFL) instruction due to its potential to enhance learners’ writing competence. However, few studies have examined the comparative effects of collaborative versus independent writing on EFL learners’ individual performance, especially in higher‐order ...
Ting Huang, Chenze Wu, Wenkang Zhang
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工程建设, 2020 江西省难处理黄金资源综合利用工程技术研究中心对某矿山提供的矿石样进行选冶工艺试验，其目的是为该矿下一步选用的选冶工艺流程提供可靠的技术依据。试样由委托方自行采集，具有代表性。根据试样基本性质，拟开展直接氰化浸出试验及浮选试验。原矿样经粗碎、中细碎、混匀、缩分后取样分析，金品位Au:5.23g/t。根据本次实验总负责人的指示，分别开展了直接氰化浸出、硫化矿浮选等探索性工艺实验。金品位5.23g/t，硫品位为1.47%。开展可磨性试验、常规氰化浸出试验，直浸回收率最终可达82.98%。采用常规浮选工艺流程 ...
友兵 涂, 建福 陈, 为荣 吴
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Basic income trials and the politics of scale: A research agenda
Policy Studies Journal, EarlyView.Abstract The growing popularity of basic income has led to extensive trials of the policy in numerous settings across the world. However, analysis of the politics of basic income, and in particular the political dynamics preceding and resulting from trial programs, lags. In response, we propose a research agenda that uses political scale to investigate
Jurgen De Wispelaere +2 more
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Powerful representation of the poor? German welfare associations' narrative advocacy during COVID‐19
Policy Studies Journal, EarlyView.Abstract The COVID‐19 pandemic sparked unprecedented experimentation in the German social assistance system, leading to changes previously considered impracticable by policymakers. This included a sanctions moratorium, easier access to benefits, and temporary cash transfers, all of which were advocated by welfare associations—key organized interests ...
Christopher Smith Ochoa
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Gaoya dianqi, 2012 到目前为止,已有大量文献介绍了各类绝缘子的人工污秽试验结果,少有文献涉及交直流人工污秽试验电源的特性试验研究。特高压交直流污秽试验电源电压高,电源特性实现难度大,因此需要对电源特性进行试验研究,探索交直流污秽电源的参数特性及其规律。昆明特高压实验室污秽实验室开展了一系列特高压交直流污秽电源的特性试验研究。研究成果一方面为人工污秽试验的理论研究和工程应用提供依据,同时为待建或已建交直流污秽试验电源的特性试验研究提供参考。文中说明了污秽交直流试验电源的工作原理和性能要求 ...
丁薇 +4 more
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Does the Community Understand the Community Guidelines?
Policy &Internet, Volume 18, Issue 2, June 2026.ABSTRACT Amid continued public controversy and political debate about online speech governments and civil society have pushed social media platforms to increase transparency around how they regulate speech, through community guidelines and content moderation systems, to support users to hold companies accountable for content removals.
Friederike Quint +4 more
wiley +1 more source
Dianci bileiqi, 1975 在进行外部绝缘工频电压试验时,现行国标GB 311—64(高压电气设备绝缘试验电压和试验方法)和GB775—64(绝缘子试验方法)都对试验装置的短路电流有明确的规定:“在试验电压下应满足下列要求:①在干燥状态下进行外部绝缘试验时,试验装置高压侧的稳态短路电流有效值应不小于0.1安。②在淋雨状态下进行外部绝缘试验时,短路电流的最大幅值应不小于0.7安 ...
西安电瓷研究所一室试验组
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