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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 preformed aluminophosphate precursor was obtained after the gel was heated at 423 K for 4 h in an autoclave.

该 预制铝前身是获得后凝胶加热423 K时为4小时，在一个反应釜。

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 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 needs be hopelessly broken-hearted, a failure, a menace to others or a traitor to himself.

现在许多人去找精神病医生咨询，并不像人们有时想的那样说明了越来越多的人得了精神疾患，而是预示着一个新世界的到来，在那里，人人都可以希望得到精神上真正的健康，不会因为自己屡屡失败，惹人讨厌，或背叛了自己的信仰而感到伤心绝望。

The number of people who consult psychiatrists today is not 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 need be hopelessly broken-hearted, a failure, a menace to others or a traitor to himself.

前去咨询心理医生的人数增多并不意味着心理不健康的人增多，而是预示了一个新世界的诞生。在这个世界里，每个人都有希望获得真正的心理健康，没有人会觉得伤心失望，感到自己是一个失败者，威胁到了别人或背叛了自己。

The trifluoromethyl modified benzofuran compounds synthesized by the invention contain a plurality of functional groups in benzene ring portion, and can be used as precursor for subsequent synthesis of benzofuran medicine intermediate containing trifluoromethyl.

本发明合成的三氟甲基修饰的苯并呋喃类化合物，苯环部分包括多种官能团，可以作为后续合成含三氟甲基苯并呋喃药物中间体的前体。

Carrots have beta-carotene, which is the precursor of vitamin A in the body.

胡萝卜有β-胡萝卜素，它是维他命A的前导物质在体内。

In plant foods it is present as its precursor, beta-carotene.

在植物性食品是目前作为其前体，β-胡萝卜素。

Heme oxygenase oxidizes heme to free iron, carbon monoxide and biliverdin, the sole precursor of biliruhin.

血红素加氧酶催化血红素氧化产生自由铁Fe(上标 2+、一氧化碳和胆绿素，后者是胆红素的唯一前体。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失