无变化的

After acetylation of cellulose, the allomorph of CTA changed and the crystallinity decreased; however, amorphism is dominant in CDA obtained by hydrolysis from CTA and spinning resulted in the reduction of crystallinity in CDA.

纤维素乙酰化后形成CTA，其晶型发生变化，结晶度降低；而CTA水解后得到的CDA，无定形占明显优势，纺丝过程中的取向又会进一步降低CDA的结晶度。

Results The skin elasticity of sun-exposed body-sites on the face is lower than relatively sun-protected body...

无创性皮肤弹性检测技术能显示不同年龄和部位皮肤弹性的变化规律，可量化地揭示二者的相关性。

The experimental apparatus has such functions as argon cleansing, heating outside the stove and closed loop control of temperature and pressure.

该实验装置具有氩气净化、炉外加热、温度和压力闭环控制，能同时施加正压、背压并按设定的恒压、恒极点胀形速度和应变速率进行实验，同时可以无接触地记录胀形件极点高度与时间的关系，并观察其形貌变化过程。

The results showed that flooding significantly increased the content of amorphous iron oxides and P adsorption capacity accompanying with a sharp decrease of crystalline iron oxides and P desorption in two tested soils.

结果表明，淹水使土壤中结晶态氧化铁含量明显减少，无定形氧化铁和土壤对磷的吸附量急剧增加，磷解吸下降；落干则使之发生相反的变化。

The seed vigor, SOD and POD decreased significantly;and electric conductivity, the content of soluble sugar and MDA increased significantly.

而超干处理的种子贮藏18个月后，种子的发芽率、发芽指数、活力指数、电导率、可溶性糖含量、SOD活性、POD活性和MDA含量均无显著变化。

Changes in the hormone level and the menopause symptom in different groups were obvious difference while those show no statis-tical difference after unilateral salpingo-oophorectomy conserving uterus.

各组间激素水平的变化和更半期症状的出现也都有显著性差异。保留子宫仅作一侧附件切除组术后体内激素水平无明显改变，更年期症状几平不出现。

In this paper, the web tension variation regularity is studied based on the printing test-bed with shiftless driver in printing. This paper offers the basis for establishing the tension control of web press. It is very significant for improving the speed and quality of web press and reducing the difference between domestic press and oversea advanced press.

本课题基于无轴试验平台研究了卷筒纸印刷机纸带张力变化规律，为建立印刷机张力控制系统提供依据，这对于提高国产印刷机速度和质量，缩短与国外先进印刷机的差距有着重要的意义。

During support with the PUCA pump, mean arterial pressure, systolic blood pressure and diastolic blood pressure increased gradually and close to the baseline at the end of experiment. No significant change in platelet and plasma free hemoglobin were found during the whole period of the PUCA pump support.

成功的7只绵羊在支持期间血流动力学逐步恢复并趋向稳定，血压接近基线值；血小板和血浆游离血红蛋白在辅助期间无明显变化；肾、隔膜泵及导管均未见明显的血栓形成。

Methods 50 non-organic cardiopathy patients who have ventricular premature beat are compared with 100 healthy persons in heart rate variation.(24 hours' long duration).

方法对 5 0例无明显器质性心脏病室性早搏患者及 10 0例健康人做 2 4h长程心率变异比较，分析NOCP室性早搏的HRV的变化。

The activity of IFNr produced by PBL in the early stage was higher than that of normal controls, while in other stages of EHF the level of IFNr was in the normal content.

血浆IFN及PBL产生的IFNr水平与EHF病毒抗原及IL-2活性的变化无明显关系。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。