前兆的

The results show: the strongest bond is the Al-Al bond in the segregated cell without containing vacancy, where the Al atomic covalence radius is greater than that of Li atom in the cell; while the strongest bond is the Al-Li bond in the segregated cell containing vacancy, and the Al atomic covalence radius in the cell is less than that of Li atom. Since the difference of electronagativity between the Al and Li atoms is obvious, it is inclined to formed the Al-Li segregated cell of short range order structure in the condition of vacancy present. The short range order structure containing vacancy is probably the embryo or precursor structure of the metastable phase δ′(Al3Li). Because the strongest covalent bond in the Al-Li-vacancy segregated cell in alloy formed in quenching is the main strength reason for supersaturated solid solution of alloy. The bond net of succeeding precipitation of δ′(Al3Li) has the picture of anisotropic Al-Al bonding and the bond intensity enhanced. Since the δ′(Al3Li) is coherence with matrix, the bond net strength is enhanced by the precipitation of δ′(Al3Li) and so strengthen the alloy.

计算结果表明：不包含空位的偏聚晶胞的键络最强键为Al—Al键，其中Al原子的共价半径较Li原子的共价半径要大；而含空位的偏聚晶胞的最强键为Al—Li键， Al原子的共价半径要比Li原子的共价半径要小；在空位存在的情况下，由于Al原子与Li原子的电负性相差明显，促使Al和Li原子结合，倾向形成Al-Li短程序结构偏聚区，这种含空位的短程序结构很可能就是δ′(Al3Li)亚稳相的前兆结构和生长胚胎；由于Al-Li-空位有序偏聚晶胞的Al—Li键络比基体键络要强许多，因此，淬火过程中合金生成的Al-Li-空位偏聚晶胞对合金过饱和固溶体起主要强化作用；后续析出的δ′(Al3Li)亚稳相键络各项异性显著，键络强度明显提高；由于Al3Li与基体共格，其大量均匀弥散析出起到提升基体整体键络强度，同样对合金产生强化作用。

The results show: the strongest bond is the Al-Al bond in the segregated cell without containing vacancy, where the Al atomic covalence radius is greater than that of Li atom in the cell; while the strongest bond is the Al-Li bond in the segregated cell containing vacancy, and the Al atomic covalence radius in the cell is less than that of Li atom. Since the difference of electronagativity between the Al and Li atoms is obvious, it is inclined to formed the Al-Li segregated cell of short range order structure in the condition of vacancy present. The short range order structure containing vacancy is probably the embryo or precursor structure of the metastable phase δ'(Al3Li). Because the strongest covalent bond in the Al-Li-vacancy segregated cell in alloy formed in quenching is the main strength reason for supersaturated solid solution of alloy. The bond net of succeeding precipitation of δ'(Al3Li) has the picture of anisotropic Al-Al bonding and the bond intensity enhanced. Since the δ'(Al3Li) is coherence with matrix, the bond net strength is enhanced by the precipitation of δ'(Al3Li) and so strengthen the alloy.

计算结果表明：不包含空位的偏聚晶胞的键络最强键为Al-Al键，其中Al原子的共价半径较Li原子的共价半径要大；而含空位的偏聚晶胞的最强键为Al-Li键，Al原子的共价半径要比Li原子的共价半径要小；在空位存在的情况下，由於Al原子与Li原子的电负性相差明显，促使Al和Li原子结合，倾向形成Al-Li短程序结构偏聚区，这种含空位的短程序结构很可能就是δ'(Al3Li)亚稳相的前兆结构和生长胚胎；由於Al-Li-空位有序偏聚晶胞的Al-Li键络比基体键络要强许多，因此，淬火过程中合金生成的Al-Li-空位偏聚晶胞对合金过饱和固溶体起主要强化作用；后续析出的δ'(Al3Li)亚稳相键络各项异性显著，键络强度明显提高；由於Al3Li与基体共格，其大量均匀弥散析出起到提升基体整体键络强度，同样对合金产生强化作用。

The number of people who consult psychiatrists today is not, as is sometimes felt, a symptom of increasing mental ill health, but rather the precursor of a world in which the hope of genuine mental health will be open to everyone, a world in which no individual feels that he individual feels that he need be hopelessly broken-hearted, a failure, a menace to others or a traitor to himself.

我们的真正担忧是源于每个人可能获知的知识。与通常的感觉不同，当今咨询精神病学家的人数不是不断增多精神疾病的体现，而是一个世界的前兆：一个人人具有真正精神健康希望的世界；一个没有人感到他自己是一个绝望心力交瘁的失败者、对其它人是个威胁或是自己叛徒的世界。

The fast-detection technique for fault-gas Carbon Dioxide (CO 2) running o ut of active fault zones, the selecting and building of observational sites as w ell as the observational situation for fault-gas CO 2 in western Sichuan are introduce d in this parer.

介绍了快速测定活动断层带CO2 气体的方法、川西地区断层气CO2 观测点的选建以及观测的情况。初步的观测结果显示，在 1999年四川绵竹两次 5 0级地震、 2 0 0 1年四川雅江 5 0级和 6 0级地震和 2 0 0 1年云南永胜 6 0级地震前，部分观测点的断层气CO2 均有很好的短期前兆异常显示。

The results suggest that under the background of global warming, the researches on the mechanism and variation of snow-storm and freezing rain should be strengthened, especially the researches on their premonitory characters; modern detect technique and instrument should be used to improve the ability of monitoring snow-storm and freezing rain, and skills and methods for forecasting snow-storm and freezing rain should be established and improved.

认为：在全球气候变暖的背景下，要加强雨雪、冰冻天气形成机理与变化规律的研究，特别是要加强其发生的前兆性研究；要充分利用现代先进的探测技术和手段，提高对雨雪、冰冻天气的监测能力；要建立和完善对雨雪、冰冻灾害天气时间发生、发展的预报技术和方法。

Although does not have the obvious clinical manifestation,but it is the symptom cerebral infarction\'s one kind of omen,therefore has the necessity very much to this sickness\'s research.3、The discussion diabetes mellitus merge cerebral infarction\'s CT characteristic,CT blocks the stove spot and the cerebral infarction whether to have the symptom to relate.4、Diabetes merge symptomless cerebral infarction not easily notes by the patient and doctor or neglects,continues to have the cerebral infarction again easily,no matter but is symptomless perhaps has the symptom, can cause patient\'s cognition function to receive the harm.

虽没有明显的临床表现，但它是症状性脑梗塞的一种前兆，因此对此病的研究很有必要。3、探讨糖尿病合并脑梗塞的CT特点，CT梗塞灶部位与脑梗塞是否出现症状的相关系。4、糖尿病合并无症状性脑梗塞不易被患者及医师注意到或忽略，易再继续发生脑梗塞，而不管是无症状性或是有症状性的，都能使患者的认知功能受到损害。

Based on the experimental simulation studies on the boilover phenomena using different scale oil tanks and various kinds of oil, the basic characteristics of boilover were analyzed. And then, more attention was paid to the typical sub-processes in boilover such as (1) the fire behavior during boilover,(2) the thermal structure in oilwater layer,(3) the generation, growth and moving process of vapor bubbles on the oil-water interface and in the oil layer,(4) the premonitory micro-explosion phenomena of boilover and its noise aspects,(5) vapor explosion phenomena on the oil-water interface,(6) the burning rate of oil and etc.

在运用中、小尺度模型油罐和多种实验油品，对扬沸火灾现象进行模拟实验研究的基础上，分析了扬沸火灾的基本性状，着重考察了扬沸火灾过程中的一些典型分过程：（1）扬沸火灾的火行为，（2）油水层热结构特性，（3）在油界面上及油层中的蒸汽泡形成、长大、运动特性，（4）扬沸前兆燃烧微爆现象及其噪声特性，（5）油水界面上的蒸汽微爆现象，（6）油品的燃烧速率等。

Induced precursory anomalies have 7 main features,i.e.diversity of types,the nonlinearity correlating with the change of rain and groudwater,the periodicity and seasonal feature of occurrence,hierarchical feature of variation,tussocky feature in temporal distribution,broad area in...

诱发前兆异常具有 7个主要的特征，即种类的多样性、与降水及地下水变化关系的非线性、发生的周期性和季节性、变化的层次性、时间分布的成丛性、空间分布的大区域性以及多种手段异常变化的时空关联性等。

But my analysis of USAir's business was both superficial and wrong. I was so beguiled by the company's long history of profitableoperations, and by the protection that ownership of a senior security seemingly offered me, that I overlooked the crucial point: USAir's revenues would increasingly feel the effects of an unregulated, fiercely-competitive market whereas its cost structurewas a holdover from the days when regulation protected profits. These costs, if left unchecked, portended disaster, however reassuring the airline's past record might be.

不过我对于美国航空业的分析研究实在是过于肤浅且错误百出，我被该公司过去历年来的获利能力所蒙骗，同时过分相信特别股可以提供给我们在债权上的保护，以致于忽略了最关键的一点︰那就是美国航空的营收受到毫无节制的激烈价格竞争而大幅下滑的同时，其成本结构却仍旧停留在从前管制时代的高档，这样的高成本结构若不能找到有效解决的办法，将成为灾难的前兆，不管以前航空业曾经享有多么辉煌的历史。

Allow to dry completely between waterings. If your plant's leaves start to curl or roll (nature's way of conserving moisture), it could be an indication of dehydration. This can be corrected by completely submerging your plant in water overnight; then resume normal watering schedule.

如果你的植株叶片开始卷曲，这可能是一个脱水的前兆，这种情况你可以通过夜晚用水浇透植株来促使植株转变过来，然后在制定一个供水时间表，对于植株来说银色的叶子和绿色的叶子则需要较多的水分，需要的光照则相对较弱一些。

Chrysanthemum of 10 thousand birthday is lax to edaphic requirement, with the arenaceous qualitative loam with fecund, good drainage had better.

万寿菊对土壤要求不严，以肥沃。排水良好的砂质壤土为好。

He unstepped the mast and furled the sail and tied it.

他拔下桅杆，把帆卷起，系住。