腐蚀

It occurs whenever a gas or liquid chemically attack s an exposed surface, often a metal, and is accelerated by warm temperatures and by acids and salts.

腐蚀无时无刻都在发生，只要表面暴露就会受到气体或液体以化学作用侵袭，高温、酸、盐分都会加速腐蚀。

By using a test method featuring artificially accelerated corrosion an investigation was conducted of the impact of power plant tail portion flue gas on the concrete of a smoke stack.

采用人工加速腐蚀实验方法，研究了电站尾部烟气对烟囱混凝土的影响。对在H2SO4、HCl和HF酸液下的低温腐蚀进行了比较研究。

The corrosion behavior of the specimens with and without conversion film was investigated by methods of collecting hydrogen gas and potentiodynamic polarization in neutral 3.5wt% NaCl solution and 0.15moldm^(-3)H3BO3/0.05moldm^(-3)Na2B4O7 solution.

在3.5%NaCl溶液和0.15mol/L H3BO3/0.05mol/L Na2B4O7缓冲溶液中的动电位极化测试表明，最佳条件下铈盐转化处理可使合金的腐蚀电位正移，腐蚀电流密度明显降低，起到一定的防护作用。

Influence of vacuum heat-treatment on the corrosion resistance of uranium surface overlaid with graphite at 100 ℃ is studied.

为了提高铀的抗氧化腐蚀能力，利用石墨的粘附特性，在铀表面涂覆一层石墨，并进行真空热处理，在100 ℃条件下对热处理后的样品进行氧化腐蚀试验。

The hysteresis coefficient of strain in the steel increased with the corrosion level, but did not change with loading history.

钢筋应变滞后系数只与钢筋腐蚀率有关，而与加载历史无关，它随钢筋腐蚀率增大而增大。

A theoretical model was developed based on the relation between hysteresis coefficient of strain in the steel and degradation of bond strength, for the load bearing capacity of corroded RC beams. The model reflects the mechanical characteristics and failure mechanism of the beam under static and repeated loading.

通过研究腐蚀梁中钢筋应变滞后系数与粘结强度退化比的关系，建立静荷载和重复荷载下与腐蚀梁的受力特征和破坏机理相一致的承载力计算模型。

At.the later stage the inerease in corrosion product scale thick- nces was sololy due to growth of iron oxides on the scale surface .

腐蚀产物膜生长到一定厚度后，扩散到表面的合金元素及铁的浓度降低到只有铁的氧化物在腐蚀产物表面生成。

Subsequently, the crystal structure and type of iron sulphide changed gradually, there existed crannies in corrosion products, resulting the increase of corrosion rate.

根据其后期腐蚀速度变化和阻抗谱特征，有可能生物有机硫化物的存在加快了其腐蚀速度。

The corrosion testing of wire and welded joint of L401 alloys was tested in 3.5%NaCl solution. The mechanism of corrosion was studied .

在3。 5%的NaCl电解质水溶液中对L401线材及其接头进行腐蚀试验，分析了其腐蚀机理。

A wire for submerged-arc welding against seawater corrosion is developed. The test results indicates that the joint welded with the wire matched with 350 type flux has a good combination of mechanical properties. The wire is suitable for ship hull steel welding.

研制了一种耐海水腐蚀的埋弧焊丝，该焊丝配用350焊剂进行施焊，焊接接头具有优良的综合力学性能，满足了船体钢的焊接要求，填补了该强度级别耐海水腐蚀船用焊丝的国内空白。

She gently rebuff ed him, but agreed that they could be friends

她婉言拒绝了，但同意作为朋友相处。

If in the penal farm, you were sure to be criticized.

要是在劳改农场，你等着挨绳子吧！