change of ambient atmosphere pressure distribution and systematic error of differential-pressure vacuum measurement

study on time evolution characteristics of laser-induced fe plasma emission spectra in ambient atmosphere

环境气体中激光诱导Fe等离子体发射光谱的时间演化特性

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conditioning: the treatment of paper, either exposure to atmospheric conditions or by "paper conditioning machine". so that its moisture content matches the ambient atmosphere.

调湿：让纸张和空气接触或使用调湿机使它的水份含量和环境大气相等的处理方法。

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the nasal cavity is the first portion for air flowing from the ambient atmosphere to the lung.

鼻腔是周围环境大气和肺之间气体流动的入口通道。

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multi-touch is a rising area of touch interaction, which allows interactions deter-mined by simultaneous contact of multiple fingers ( or other pointing methods, such aspens) directly with graphical objects which are displayed on the screen.

多触点交互是一种新型的触摸交互方式，允许用户在显示表面上使用一个或多个手指（或其它指点方式，如光笔）同时通过触摸操作显示对象。

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they crossed the river by a ferry, and rode long time in silence, while the twilight slowly fell behind the aspens. it is desirable that compensating cables be run in earthed conduit.

他们乘一只摆渡船过了河，默不作声地骑了一大段路，那时候，暮色慢慢地落在白杨树的后面了。补偿导线最好在地下管道中穿过。

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it is pointed out that aspens are the best raw material making high yield pulps, and that development of straw high yield pulps is an important way that eliminates the pollution of chemical straw pulps.

指出杨木是制高得率浆最好的原料，发展高得率草浆，是解决化学草浆污染危害的重要途径。

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i am staying in my cart, staring through the window at the aspens moving slowly backward and figuring out what the distant prairie looks like.

呆呆地坐在车中，望着窗外缓缓退后的一棵棵白杨，不知远处的草原此时是一幅什么景象。

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quaking aspens like these in the elk mountains of western colorado, whose leaves tremble in the slightest wind, are common across north america.

像这些在科罗拉多州西部的美洲赤鹿山颤动的杨树在整个北美非常普遍。它们的叶子会在微风中颤抖。

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known for tolerating poor soils and cold climates, aspens flash yellow against their white bark in an unmistakable sign of coming winter.

它们的叶子会在微风中颤抖。颤杨以能忍耐贫瘠土壤和寒冷气候而闻名。以它们的白色树皮为衬托，颤杨树林间闪烁着黄叶，预示着即将来临的冬天。

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now the aspens on the hill are all remarkable with the translucent membranes of blood-veined leaves.

现在，山坡上白杨的叶子上有一层半透明薄膜的叶脉，显得格外引人注目。

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so aspens do double duty.

这样的话，杨树同时承担了两项任务。

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study on properties of pulping of fast growth wood& zhonglin aspens no.46

中林-46速生杨制浆性能的研究

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world federation of trade unions for energy, chemical and miscellaneous industries;

世界能源、化学和杂货工业工会联合会；

provided by jukuu

plate movement, terrain amalgamation and continental accretion.

第三，板块运移与地体拼贴和大陆增生；

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the influences of parameters such as h_2o_2, fuchsin basic and ammonium ferric oxalate concentration and initial ph, were evaluated.

考察了初始pH、H2O2浓度、草酸高铁铵浓度、碱性品红浓度对碱性品红降解率的影响。

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the operational variables include crystallization temperature, stirring speed, the concentration and flow rate of ammonium oxalate. state equations are the population balance equations and the mass balance equation. the outputs are average particle size and relative volume-based variance.

该模型中操作变量为结晶温度、搅拌速率、草酸铵的浓度与流速；状态方程为粒数衡算方程与物料衡算方程；输出为平均粒径与粒径相对体积方差。

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magnesium chloride was purified by recrystallization, magnesium oxalate was prepared by the reaction of magnesium chloride with ammonium oxalate and magnesium oxide certified reference material was obtained by baking magnesium oxalate.

氯化镁经重结晶提纯，与草酸铵反应制得草酸镁，将草酸镁煅烧制备成氧化镁标准物质。

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urea, ammonium oxalate and ethylene glycol inhibited the crystallization of the trivalent vanadium ions, so that the decreasing rate of the electrolyte concentration was reduced.

尿素、草酸铵和乙二醇具有抑制三价钒离子结晶的功能，可降低电解液浓度的下降速率。

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the mobile phase consisted of acetonitrile and 0.3% ammonium oxalate solution ( adjusted to ph 4.0 with acetic acid)( 42 ∶ 58).

流动相：乙腈0.3%草酸铵溶液（醋酸调节pH4.0）（42∶58）；流速：1.0ml·min-1。

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the effects of dosage of rdx and modified ammonium oxalate ( ca) on the thermodynamic parameters were studied by the minimum free energy method via theoretical calculation.

含RDX的低燃速丁羟推进剂配方，采用最小自由能法进行理论计算，研究了RDX和改性草酸铵对热力学参数的影响。

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