pitting

简明释义

英[ˈpɪtɪŋ]美[ˈpɪtɪŋ]

n. 凹陷；金属表面的腐蚀，点状腐蚀；把游戏玩家带到一起战斗

v. 使留下疤痕，挖坑于；除去……的核；（比赛中途）停车加油；窖藏（pit 的现在分词）

英英释义

单词用法

同义词

反义词

例句

1.For a species that was supposed to be eating a lot of abrasive foods, Nutcracker Man had teeth that showed very little sign of pitting.

对于一个被认为为食用很多高磨损性食物的种群，胡桃钳子人的牙齿却只有很小的磨损迹象。

2.The fighting in Darfur is usually described as racially motivated, pitting mounted Arabs against black rebels and civilians.

达尔富尔的冲突往往被描述成种族间的仇恨，马背上的阿拉伯人与黑人平民和叛军间的争斗。

3.The lawsuit is the most recent of many recent cases pitting state power against federal power.

这个案例是许多各州权力与联邦权力较量的事例中最新的一个。

4.Corrosion pitting also can lead to fatigue crack initiation depending on the component, the location of pitting, and cyclic loading conditions.

腐蚀斑点还会因不同的部件、斑点的位置和循环载荷状况，导致一些不同的疲劳裂纹。

5.If film's not your thing, have a surf around the archives of I'm a scientist, a project pitting scientists against teenagers' questions.

如果你不喜欢影片，那么可以搜索一下i ' maScientist的归档，这个项目是让孩子们用问题难为科学家们的。

6.Actively watch for cavities if you spot any discolouration or pitting then they could be signs of cavities.

积极为观赏溶洞如果您现货任何变色或点蚀，然后他们可以迹象蛀牙。

7.For the rest, those who fancy pitting their knowledge of physics against the pros can do so.

至于其余粒子，那些谁喜欢用物理知识与专家抗衡的人可以这样做。

8.It was about the combat, the challenge of pitting ourselves against others.

这事关一种战斗，一种使我们与他人为敌的挑战。

9.Clinical dental fluorosis is characterized by staining and pitting of the teeth.

临床牙氟中毒的特征是牙腐蚀和损斑。

10.The artist used a technique that involved pitting （凹坑） the surface of the canvas for texture.

艺术家使用了一种技术，通过在画布表面上pitting （凹坑） 来增加纹理。

11.The mechanic explained how the pitting （凹坑） on the brake rotors could affect the vehicle's performance.

机械师解释了刹车转子上的pitting （凹坑） 如何影响车辆的性能。

12.During the inspection, the inspector found pitting （凹坑） in the aluminum parts.

在检查过程中，检查员发现铝部件上有pitting （凹坑）。

13.After years of exposure to moisture, the metal showed significant pitting （凹坑） corrosion.

经过多年的潮湿暴露，金属出现了明显的pitting （凹坑） 腐蚀。

14.The engineer noted that pitting （凹坑） on the turbine blades could lead to reduced efficiency.

工程师指出，涡轮叶片上的pitting （凹坑） 可能会导致效率降低。

作文

In the world of materials science and engineering, pitting refers to a localized form of corrosion that leads to the creation of small holes or cavities in a material, typically metals. This phenomenon can be particularly detrimental in various industries, including aerospace, automotive, and marine applications. Understanding the mechanisms behind pitting is crucial for engineers and designers to mitigate its effects and enhance the longevity of structures and components.The process of pitting often begins when a protective oxide layer on a metal surface is damaged. Factors such as mechanical stress, environmental conditions, and the presence of aggressive ions can contribute to the breakdown of this protective barrier. Once the oxide layer is compromised, the underlying metal becomes exposed to corrosive agents, which can initiate the pitting process. The localized corrosion that follows is characterized by the formation of small pits, which can vary in size and depth, depending on the severity of the corrosive environment.One of the most concerning aspects of pitting is that it can occur without any visible signs of general corrosion. This makes it difficult to detect until significant damage has already occurred. For example, in marine environments where saltwater is prevalent, stainless steel components may appear intact while actually harboring numerous pits beneath the surface. These hidden defects can lead to catastrophic failures if not addressed promptly.To combat pitting, several strategies can be employed. First and foremost, selecting the right materials for specific environments is essential. For instance, using alloys with higher resistance to pitting can significantly reduce the risk of corrosion. Additionally, applying protective coatings can help shield the metal from corrosive agents, further preventing the initiation of pitting.Regular maintenance and inspection are also critical in identifying potential issues before they escalate. Engineers often utilize advanced techniques such as ultrasonic testing or eddy current testing to detect pitting early on. By implementing these proactive measures, organizations can save costs associated with repairs and replacements, while also ensuring the safety and reliability of their products.Moreover, understanding the environmental factors that contribute to pitting allows for better risk assessment. For example, locations with high humidity and exposure to chlorides are more susceptible to pitting corrosion. By recognizing these risks, companies can develop tailored strategies to minimize exposure and protect their assets.In conclusion, pitting is a significant concern in the field of materials science, particularly in industries that rely heavily on metal components. By understanding the causes and consequences of pitting, as well as implementing effective prevention measures, engineers can ensure the durability and safety of their structures. As technology advances, continued research into pitting and its mitigation will remain vital for the development of more resilient materials and designs.

在材料科学和工程领域，pitting指的是一种局部腐蚀形式，它导致材料（通常是金属）表面出现小孔或凹槽。这种现象在航空航天、汽车和海洋等各个行业中都可能造成特别严重的损害。理解pitting背后的机制对于工程师和设计师来说至关重要，以便减轻其影响并增强结构和组件的使用寿命。pitting过程通常始于金属表面保护性氧化层的损坏。机械应力、环境条件和侵蚀性离子的存在等因素均可能导致这一保护屏障的破坏。一旦氧化层受到损害，暴露的金属将面临腐蚀剂的侵袭，这可以引发pitting过程。随之而来的局部腐蚀以小凹坑的形成为特征，这些凹坑的大小和深度可能因腐蚀环境的严重程度而异。pitting最令人担忧的一个方面是，它可能在没有任何明显的一般腐蚀迹象的情况下发生。这使得在显著损害已经发生之前很难检测到。例如，在盐水盛行的海洋环境中，不锈钢组件可能看似完好无损，但实际上在表面下隐藏着许多凹坑。这些隐患如果不及时处理，可能导致灾难性的故障。为了对抗pitting，可以采用几种策略。首先，为特定环境选择合适的材料至关重要。例如，使用具有更高抗pitting能力的合金可以显著降低腐蚀风险。此外，施加保护涂层可以帮助金属免受腐蚀剂的侵害，进一步防止pitting的发生。定期维护和检查在识别潜在问题方面也至关重要。工程师常常利用超声波检测或涡流检测等先进技术，及早发现pitting。通过实施这些主动措施，组织可以节省与维修和更换相关的成本，同时确保其产品的安全性和可靠性。此外，了解导致pitting的环境因素有助于更好的风险评估。例如，高湿度和接触氯化物的地区更容易发生pitting腐蚀。通过认识到这些风险，公司可以制定量身定制的策略，以最小化暴露并保护其资产。总之，pitting在材料科学领域是一个重大关注点，尤其是在依赖金属组件的行业中。通过理解pitting的原因和后果，以及实施有效的预防措施，工程师可以确保其结构的耐久性和安全性。随着技术的进步，继续研究pitting及其缓解措施对于开发更具韧性的材料和设计仍然至关重要。