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The presence of REE tetrad effects in apatites and whole rocks of S-type granites has been reported by Sha and Chappell (1999) and Zhao et al.(1999), respectively. The REE tetrad effect in minerals, such as apatite, spessartite, beryl, alkali feldspar and spodumene, from all zones of Altay No. 3 pegmatite has been found remarkable, and the fractionations among isovalent incompatible elements in these minerals are also significant. This paper puts forward that the REE tetrad effect is one of the basic features of peraluminous melts and the origin of REE tetrad effect might be probably related to some processes prior to the formation of pegmatite magma. The immiscibile liquid separation between silicate melt and hydrosaline melt may be responsible for it.

由于阿尔泰3号伟晶岩脉各带磷灰石以及与其共生的石榴石、绿柱石、碱性长石、锂辉石矿物均存在明显的稀土"四重效应"以及相同电价、相似离子半径的不相容元素间存在显著的分异,并结合最近赵振华等(1999)和Sha and Chappell(1999)报道S型花岗岩全岩和单矿物(磷灰石、独居石、长石、黄玉等)均存在稀土"四重效应"这一现象,本文研究提出,稀土"四重效应"是富挥发分过铝质岩浆体系的一个基本特征,其机制既不可能由含稀土的副矿物早期结晶引起残余熔体相中REE含量变化的结果,也不能定性地归因于流体相与熔体相相互作用过程中稀土元素在流体/熔体之间分异的结果,而很可能与伟晶岩岩浆形成之前某些过程密切相关,S型花岗岩岩浆在液相线以上存在硅酸盐熔体与高盐熔体的不混溶液相分离有可能是过铝质岩浆体系产生稀土"四重效应"的主要原因。

The numerator in this fractional designation is known as the diametral pitch and controls the pitch diameter; the denominator, which is always double the numerator, is known as the stub pitch and controls the tooth depth.

在这一系列的分数中的分子是径节,径节的大小决定了节圆的直径;而分数中的分母通常是分子的两倍,分母是残余径节,它的作用是控制齿槽的深度。

Fruit a berrylike indehiscent drupe with pyrenes 2 × as many as styles, globose, in dried material characteristically longitudinally angled, squarish or rectangular in longitudinal cross-section, with flattish apex and base, contracted or not at equator, disk persistent at base, style or stigma remnants persistent at apex.

果浆果状的不裂的核果的,具果核数为花柱的2倍,球状,在干标本上明显具纵向的角,纵向截面近似方形的或长方形的,具平的先端和基部,收缩或在赤道轴上不收缩,花盘宿存在基部,花柱或柱头残余在先端宿存。

A fuzzy control system incorporated with sectional integral compensation is introduced,and the working principle of the contrl system,the determination of the rule of the fuzzy control and the realization of the adjusting parameter and temperature control system are described indetail.

在塑料挤出过程中,温度控制的效果直接影响挤出制品的质量,包括制品表面的残余应力、收缩率及制品质量的稳定性等。温度控制装置的可靠性及温度控制的精度是保证制品品质的关键因素之一[1] 。

The composi-tion of the seawater has changed rapidly since Phanerozoic, and the prolonged mineralogical changes of marine non-skeletal limestone and potash evaporates occurred in a phase on a 100-200 Ma.

结果表明:显生宙以来海水组分发生变化,经海相非骨骼灰岩和钾盐蒸发岩矿物学研究,发现这两种沉积岩长期以来连续变化,在"文石海"是MgSO4型蒸发盐,在"方解石海"是KCl型蒸发盐,从白垩纪晚期、第三纪早期的底部石盐溴含量及矿物学特征表明,此时处于"方解石海",古海水组分的特点是造成缺硫酸盐型钾盐矿床形成的物化基础;通过NaCl-KCl-MgCl2-H2O和NaCl-KCl-MgCl2-CaCl2-H2O两个体系相图的分析认为,当时所形成的成钾原始体系母液是高镁、低钾氯化物型的卤水,在母液蒸发过程中,由于原始海侵母液与残余高镁母液的掺杂作用,致使结晶路线直接从氯化钠区到E点母液或光卤石与氯化钠共饱线上,而没有通过氯化钠和氯化钾的共饱线,因而在矿体中氯化钾相很少或几乎不存在,由于外界CaCl2型水体的掺杂,使成钾母液进入光卤石相区,随着蒸发的进行,最终形成溢晶石矿物。

In the June issue of The Astrophysical Journal Letters, the researchers propose that the ribbon could be generated by the collision of the LIC with something else outside the heliosphere: a million-degree remnant of an ancient supernova.

在6月号的天体物理学杂志通讯,研究人员建议,缎带可以碰撞所产生的对利比亚保险公司与日光层以外的其他东西:1万度的一个古老的超新星残余。

Even in their darkest hour, with prophecies of doom and gloom thundering in their ears, in addition to the lost contact of ten tribes and the seventy year exile from the promised land, the survival of an eventual blessed kingdom remnant was always placed before them.

甚至在其最黑暗的时刻,与预言的末日和忧愁如雷在他们的耳朵中,除了向失去联络的十部落和七十年流亡从应许之地,生存的最终有福了英国的残余是总是把它们之前。

The morphological structure of cured vinyl-ester resin and the formation of two-phase structures in vinyl-ester resin has been studied by using SEM and differential scanning calorimetry.The results demonstrated the existence of clusters of gel-particles with a size of about 20 μ m,each cluster of gel-particles containing many gel-particles with coral-like structures.The formation of gel-particles resulted in two-phase structure characterized by the two peaks in the rescanned DSC thermographs of the resin. The cure conditions (temperatures,post-cure) affected microstructure in the cured resins.

采用SEM、DSC研究了乙烯基酯树脂固化过程中凝胶粒子的形成过程及两相结构对固化放热的影响,结果表明,凝胶粒子在固化树脂中呈群状分布,每群凝胶粒子的最大尺寸为20μ m左右,每群凝胶粒子由许多独立凝胶粒子组成;凝胶粒子的形成使树脂产生了两相结构,使树脂的恒温DSC残余放热呈双峰分布;树脂的固化条件影响其微观结构。

Using wireless temperature logger produced by ebro, German, several important factors which influence temperature field obviously have been found.

以德国ebro生产的无线温度数据存储器为测温设备,在总结大量实验数据的基础上分析出影响温场的几个重要因素:装载量、残余冷汽团、温度控制器、温度探头位置,并对其影响温场的原理做了通俗易懂的阐述,且结合实际使用情况给出建议。

The common ancestor is, however, too recent for the new species to be a remnant of the first human excursion from Africa, the one that led to Java man and Peking man, now known as Homo erectus.

然而人类共同祖先出现的年代比较接近现代,以致于这新的人种不可能是第一批从非洲出发迁徙人类的残余。这今天被称为直立人的第一批人类,是爪哇人和北京人的祖先。

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What are your goals and strategies for growth?

你的成长目标和策略是什么?

And unto the angel of the church in Sardis write; These things saith he that hath the seven irits of God, and the seven star I know thy works, that thou hast a name that thou livest, and art dead.

3:1 你要写信给撒狄教会的使者,说,那有神的七灵和七星的,说,我知道你的行为,按名你是活的,其实是死的。

"It is a testament to making sure unemployment compensation is available, making sure we are looking out for people who have lost their jobs," she said.

"这是个实证,证明我们必须确保人们都可以得到失业补偿,确保那些失去工作的人们得到照顾。"