使服役

The experimental results denoted that the finer pearlite along the austenite boundaries in the as-cast Cr30Ni20NRE steel disappeared first under long-term and high-temperature service condition, and that an umber of Cr- richened carbides were formed due to unila-teral carburizing at long-term and high- temperature, consequently causing Ni to concentrate, bulging and calalyzing decomposition of the carburizing gas.

试验结果表明，长期在高温条件下服役，铸态Cr30Ni20NRE耐热钢中沿奥氏体晶界的珠光首先融入奥氏体，长期高温单边渗碳形成大量富铬碳化物，促使镍富集并起泡形成瘤状物，催化含碳气体的分解；表层瘤状物使辐射管表层疏松，表面积扩张，加快了碳向基体的渗入，提供了碳化物持续长大的条件，并引起沿碳化物周边开裂和奥氏体基体严重萎缩；合金元素的重新分布造成主合金元素铬和镍产生两极分化，镍和硅的富集促使石墨化，与侵入的氧形成内部氧化空洞和膨胀疏松，最终导致构件穿孔失效。

The method is to make steel work in safety term during toughening gradually.

通过对上述曲线的分析，得到了避免钢高温脆裂的方法，该方法就是使钢在逐渐韧化的安全期内服役。

While the Royal Romanian Army's first encounter with this Soviet medium tank, arguably one of the best tanks of World War Two, may have been in late 1941, the first intact model to be captured by Romanian troops dates from May 1942, when the Romanian VI Army Corps recovered an abandoned T-34 at the end of the abortive Soviet Kharkov offensive. Two such tanks were in Romanian hands as of 1st November 1942, by which time the T-34's clear superiority over anything in the Romanian arsenal was well known; a firing demonstration against a captured tank in October showed the 37mm cannon of the R-2 tank q.v.

在东线的战斗中罗马尼亚人缴获了一些T-34坦克，该坦克的先进设计思想深深地打动了罗马尼亚人以至于安东尼斯库元帅提议对其进行仿制装备本国军队，但罗马尼亚现时的工业能力使之成为空想。T34坦克在罗马尼亚军队中服役的记录很少，在1942年11月的清单上只有2辆在列，另外1944年3月罗马尼亚人还从克里米亚运了4辆不堪使用的T-34坦克回国，用于反坦克教学等杂七杂八的任务。

Richard Blumenthal, the Democratic senatorial candidate for Connecticut, is in trouble for having conveyed the impression that he served in Vietnam, when in fact he had obtained several deferments.

民主党康涅狄格州参议员候选人布鲁门萨尔使公众误以为他曾在越南服役，而事实上，他得到了几次缓役而没有去越南。这给他带来了不少麻烦。

The result shows that the impact toughness and hardness of the cast hot-work die steel reaches the best value (72.3 J/cm 2;34.5 HRC) when the steel is quenched at 1050℃ and tempered at 650℃.

因此 ，如何提高铸造热锻模具的力学性能，使其满足服役条件的要求，就成为关键。

Because of long and thin structure characteristics, and sustain high frequency impact load under erosive medium, the drill rod's serve condition is most rigorous, and drill rod is one of the most easily damage tool in the percussion drilling rock system.

由于细长的结构特征和在腐蚀性介质中承受高频冲击载荷，使钎杆成为服役条件最苛刻、在冲击式凿岩系统中最容易损坏的机件，钎杆寿命低是制约凿岩爆破技术进步的关键问题。

Beaumont's modification was further improved when Grade A armoured windscreens became available.

这个版本获得了订单，首次正式使用时在1944年二月 Hawker Tempest Mk V 型飞机服役的时候。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了