可变化

The meaning of economic growth can usually be expressed as the growing of the level of sustainable gross national output and per capita output ,accompanying with the constant changes in the economic structure.

经济增长的涵义通常可以表述为可持续的国民总产出水平及人均产出水平的不断增加，并伴随着经济结构的不断变化。

Pekinensis . IAA at concentration of 0.4-1. 0 mg/L in solid MS medium incited many adventitious roots on hypocotyl segments. The earliest anatomic changes were observed on cut surface of hypocotyl segments under optical microscope 24 hours after IAA treatment: cytoplasmic and nuclear density became higher in a few of parenchytmatous cells adjacent to phloem in tissue of pericycle, followed by cell divisions.

在生长素诱导24h后，可借助显微切片观察到下胚轴切面附近明显的解剖学变化：首先是中柱鞘内靠近韧皮部的薄壁细胞的细胞质与细胞核变浓，染色加深，部分细胞分裂；随后是分裂的细胞团增大，逐渐形成根原基并分化出根冠。

The result show that the accessibility is remarkably increased and the oxidation reactivity of cellulose with sodium periodate is enhanced.

可及度和反应性能的提高与纤维素纤维在超声波作用下发生的结构变化有关。

The analytical method is always used due to the large amount of the objects and not very high accuracy of forecasting. A method based on the position and velocity derived from the mean orbit elements directly is given, which is to avoid the problem of singularity in calculating the periodic terms of orbit elements variation, thus the process and software can be simplified.

在已有分析法得到t时刻平均根数的基础上给出一种轨道预报方法，由t时刻的平均根数给出该时刻卫星的位置和速度，在此基础上将地球非球形引力摄动的周期项直接用卫星直角坐标的位置和速度分量表示，这样可以避免在计算轨道根数变化的周期项时出现的奇点问题，从而对根数的选择无特殊要求，可适用于各种轨道，简化预报程序和相应的软件，提高预报效率。

It was necessary to consider the permittivity dependence on temperature to calculate the temperature of the heated sample.

微波环境下测温存在一些问题，借助数值模拟的方法可计算微波场中试样温度随加热时间的变化。

However, the spectral stability was increased, and the 0-1 transition and the full width at the half-maximum of photoluminescence spectra was decreased with the increase of the alkoxy length on phenylene. The nature (e.g. electron-donating and electron-withdrawing) of the substituted side groups on phenylene has obvious effect on the optical properties, QY and electrochemical properties of the polymers.

苯环上取代侧基的给吸电子性质变化对聚合物的光电性能具有全面的影响，改变取代侧基的给吸电子性质可调节芴苯共聚物的发光颜色和HOMO、LUMO能级以及HOMO-LUMO能隙等，因此，通过引入不同性质的侧基可以实现对此类聚合物光物理性能的调控。

Methods The activity was determined by 3 - phosphoglycerate as substrate, the enolase and a series of coupling to 340 nm wave-length automatic analyzer in the determination of total activity could be derived.

PGAM活性测定采用3-磷酸甘油酸为底物，经烯醇化酶等一系列偶联，以340 nm波长在自动分析仪上测定，根据NADH吸光度变化可求出PGAM总活性。

The photo resist finish is exposed to ultra violet light. The chemical reaction triggered by that process step is similar to what happens to film material in a film camera the moment you press the shutter button.

光刻胶层随后被曝光在紫外线之下，期间发生的化学反应类似按下机械相机快门那一刻胶片的变化，光刻胶经过紫外线曝光后会变得可溶解。

In this process, the photocatalyst is almost no change, so results may remain five years or even 10 years.

在此过程中，光触媒本身几乎不发生变化，因此效果可保持5年甚至10年以上。

It was found that in the DC bias electric field, when the relaxation time of the hot-electrons in the electron-electron and electron-phonon interaction process is longer than the carrier life, the photoconductivity oscillation can be caused by the change of mobility in the process of optoelectronic transport, which is the main cause for the output electrical pulse to show oscillations.

分析了开关体内载流子的微观状态和输运过程，在直流偏置电场作用下，开关体内的热电子在电子-电子、电子-声子相互作用过程中，当它们的弛豫时间大于载流子的寿命时，光电子的输运可通过迁移率变化引起光电导振荡，这是开关输出电脉冲出现振荡的原因。

She gently rebuff ed him, but agreed that they could be friends

她婉言拒绝了，但同意作为朋友相处。

If in the penal farm, you were sure to be criticized.

要是在劳改农场，你等着挨绳子吧！