coal tar

简明释义

煤焦油

英英释义

例句

1.The doctor prescribed a shampoo containing coal tar for my psoriasis.

医生开了一种含有煤焦油的洗发水给我治疗银屑病。

2.In the laboratory, we analyzed the components of coal tar for research purposes.

在实验室中，我们分析了煤焦油的成分以用于研究目的。

3.Many road surfaces are treated with coal tar to enhance durability.

许多道路表面用煤焦油处理以增强耐久性。

4.The production of coal tar is a byproduct of the coking process in steel manufacturing.

在钢铁制造中，煤焦油的生产是焦化过程的副产品。

5.Some roofing materials use coal tar for waterproofing.

一些屋顶材料使用煤焦油进行防水处理。

作文

Coal tar is a thick, black liquid that is a byproduct of the carbonization of coal. It is composed of a complex mixture of organic compounds, including polycyclic aromatic hydrocarbons (PAHs), phenols, and heterocyclic compounds. The production of coal tar (煤焦油) occurs during the process of converting coal into coke, which is primarily used in steel manufacturing. This substance has been utilized for various purposes throughout history, ranging from medicinal applications to industrial uses. One of the most notable applications of coal tar (煤焦油) is in the treatment of skin disorders such as psoriasis and eczema. Due to its anti-inflammatory and antipruritic properties, it can help alleviate itching and reduce scaling associated with these conditions. In fact, many over-the-counter products, including shampoos and ointments, contain coal tar (煤焦油) as an active ingredient. Another significant use of coal tar (煤焦油) is in the production of various chemicals and materials. It serves as a source of valuable compounds, such as naphthalene, which is used in the manufacture of mothballs and other products. Additionally, coal tar (煤焦油) can be processed to produce pitch, which is essential in the production of electrodes for aluminum smelting. However, despite its usefulness, there are environmental and health concerns associated with coal tar (煤焦油). The presence of PAHs in coal tar (煤焦油) raises concerns regarding its carcinogenic potential. Prolonged exposure to high levels of PAHs has been linked to an increased risk of developing certain types of cancer. Therefore, safety measures must be implemented when handling coal tar (煤焦油) and its derivatives. In recent years, researchers have been exploring alternative methods for utilizing coal tar (煤焦油) in a more environmentally friendly manner. For instance, some studies have investigated the possibility of using coal tar (煤焦油) in road construction and as a sealant for pavements. These applications aim to minimize waste and maximize the value derived from this byproduct of coal processing. In conclusion, coal tar (煤焦油) is a multifaceted substance with a rich history of use in various fields. While it offers numerous benefits, it is crucial to navigate its applications with caution due to the potential health risks associated with its components. As research continues to evolve, the future may hold innovative ways to harness the properties of coal tar (煤焦油) while minimizing its environmental impact.