大约

Cataloged as NGC 5239, Omega Centauri is about 18,000 light-years away and 150 light-years in diameter.

正式编录为 NGC 5139的半人马座欧米伽星团距离我们大约 18000 光年，直径大约与150光年。

Preparation of the cathode includes:shaping under the press of 40Mpa, sintering at 550℃for 1 hour and at 900℃for 8 hours and threading with molybdenum bar; Considering the literatures we choose CaCl2 as salt for preparation titanium. Pretreatment of salt is for 1 hour at 100℃and for 2 hours at 300℃. Partial pressure of oxygen which need lower than 5.11×10-7Pa to reduct titanium oxides and hygroscopic property of salt need a sealed equipment to electrolyse. And finally successfully designed a satisfied one and the results show that the equipment can be satisfied the requirment of the experiment. Flow of the inert gas is 1.5L/min, the voltage is 2.8 V, temperature is 850℃and time is 2 hours during pre-electrolysis. Flow of the inert gas is 0.2L/min, the voltage is 3.1 V, temperature is 900℃and time changes with the mass of TiO2 during electrolysis, namely the greater need the longer time; To eliminate influence of salt and other impurities, the products need to wash with distilled water and dilute chlorhydric acid , then wash with dilute hydrochloric acid under supersonic wave assistant. Finally, electrometical properties of the electrolysis of TiO2 is researched by cyclic voltammetry and chronoamperometry, and results show that there are two main reodox steps, namely from TiO2 to TiO and from TiO to Ti.

阴极制备主要包括40MPa压力下模压成型、两段式烧结(1小时内升至550℃保温1小时，再1小时升温至900℃保温8小时)及烧结后TiO2块打孔用钼棒串接三个主要环节；实验中选用CaCl2作为电解熔盐，并对其进行预处理(100℃，保温1小时； 300℃，保温2小时)；经热力学计算，还原钛氧化物的氧分压至少要低于5.11×10-7Pa，结合电解过程中所用熔盐CaCl2有极强的吸水性的特点，电解装置应有较高的密封性，自行设计了一套密封性可靠的电解装置，便于实验过程中熔盐预处理和氧分压的控制；通过干燥处理预电解过程中Ar流量大约为1.5L/min、电压为2.8 V、温度为850℃、时间为2小时，电解过程中Ar流量大约为0.2L/min、电压为3.1V、温度为900℃，实验结果表明电解时间与TiO2质量密切相关，质量越大需要电解的时间越长；通过自来水冲洗—稀盐酸浸泡、洗涤—在超声波辅助作用下稀盐酸洗涤，可减少熔盐及其它杂质对电解产物检测结果的影响；最后，通过循环伏安法、计时电流法对电解机理的研究，确定电解还原TiO2制备金属钛主要经历了TiO2-TiO-Ti的过程。

They are perfect but dichogamous, lasting approximately two days, and opening in two stages, first as female flowers for approximately 36 hours.

他们是完美的，但dichogamous ，历时大约两天，并开放两阶段，首先是作为女性花大约36个小时。

Detailed calculations imply that the source of the dipolarization was situated at X=-7.7R to -8.6R and the propagation speed was about 70km?

详细计算表明偶极化源区的位置大约在X＝-7.7R~-8.6R，而传播速度大约为70km？

Background and purpose: Retinoblastoma is a malignant tumor of the retina that usually occur in young children. They are the most common pediatric tumor and have an incidence of approximately 1 in 20,000 children. Advanced retinoblastoma disease is correlated with poor patient survival, and survival rates for extraocular disease range 0%~50%.

背景和目的：视网膜母细胞瘤是最常见的儿童恶性肿瘤，大约每20000名儿童就会有一名发病，该疾病的存活率大约只有50%左右，因此研发此疾病的有效治疗方法即是一个重要的课题。

Importantly, recent analyses8 have begun to reveal new relationships between early vertebrates, in which acanthodians and placoderms are scattered among the early divisions of gnathostome evolution; acanthodians, in particular, are cropping up on chondrichthyan and osteichthyan stem groups.

有颌类包括硬骨鱼类以及软骨鱼类。软骨鱼类仅占有颌类物种数的2%，其余98%的有颌类都属于硬骨鱼类。在硬骨鱼类中，大约一半是辐鳍鱼类，剩余的统称肉鳍鱼类。辐鳍鱼类包括从斑马鱼到多鳍鱼的大约2万8千个种。

Almost 10am reached Hatt Yai.Most important is taking breakfast.Then check in to the so called hotel, actually is an apartment, too late order (1month) all Hatt Yai hotels full house.

大约10点到达合艾，首先是医好肚子，然后就入住酒店，其实是公寓，因太迟订房（大约1个月前）全合艾酒店都经已满座。

The Mitanni were an eastern Indo-European people (belonging to the linguistic "satem" group) who settled in northern Mesopotamia circa 1600 BC South-East of Turkey and by circa 1450 BC established a medium-size empire east, north and west, and temporarily made tributary vassals out of kings in the west, even as far as Kafti and making them a major threat for the Pharaoh.

米坦尼人是一群东部印欧语系的人（属于语言学上的&S类语言&组别），大约在公元前1600年从土耳其东南部移居到美索不达米亚，大约在公元前1450年建立一个中等大小的帝国，让东面、北面和西面，甚至远至卡夫提的附庸诸候国暂时脱离了西面的国王，使他们成为了埃及法老的主要威胁。

Around the first century AD, the Greek historian Plutarch wrote about pirates of Cilicia who practiced the Mithraic "secret rites" around 67 BC.

大约在头一个世纪，希腊历史学家帕拉塔斯写了关于西里西亚的海盗，大约在公元前六十七年熟练密特拉的&秘密祭礼&。

The composition of the invention comprises: about 80 to about 99 weight percent lubricant; and about 1 to about 20 weight percent sodium or potassium alkali metal salt of a branched or unbranched aliphatic monocarboxylic acid having at least 8 carbon atoms.

本发明的组合物包括：大约80-99%重量的润滑剂；以及大约1-20％的具有至少8个碳原子的支链或非支链脂肪族一元羧酸的碱金属盐。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。