由该酶产生的跨膜电化学梯度是物质跨膜运输的原初动力。
The transmembrane electrochemical gradients generated by the enzyme was the primary force for the transmembrane transports.
形成化学浓度梯度，告诉干细胞如何以及向哪儿发育。
This sets up a chemical concentration gradient that tells stem cells how and where to develop.
趋化现象：一种对化学浓度梯度的趋化反应。
(chemotactic movement) a TXIS in response to a chemical concentration gradient.
对于反应溅射，可通过连续改变反应气体流量制得化学成分比连续变化的梯度薄膜。
For reactive sputtering, the gradient films with varying ratio of chemical component can be prepared by changing gas flow rate continuously.
频率曲线众数峰含量随深度的变化，不但指示了化学风化趋势，而且反映了风化程度的变化梯度。
The variation of frequency curve's mode peak content with the increasing of depth, shows not only the trend of chemical weathering but also variation gradient of weathering extent.
此式表明，蚀坑内的电压取决于蚀坑内各类活性腐蚀因子的化学势梯度和相应粒子的电压降。
The equation shows that the potential depends on the chemical potential gradient of the active ions in the occluded pitting and partial potential drop corresponding to the same ions.
本文叙述了电化学法测量的原理，介绍了用一半圆电极对同时测量壁面上二维湍流速度梯度脉动的方法和测量结果。
This paper describes the principle of such a measurement, and a semicircular electrode pair is suggested for the measuring of the two dimensional fluctuations of velocity gradient on the wall.
梯度材料的抗烧蚀机理为金属粘接剂的挥发损失、热化学烧蚀和机械冲刷。
The ablation mechanisms of the material are volatilization of metal binder, hot chemical ablation and mechanical erosion.
采用化学分析、金相检验和显微硬度梯度试验等方法对油压机柱塞表面淬火交界处裂纹进行了分析。
The crack in quenching boundary of the hydraulic press plunger surface was analyzed by means of chemical composition analysis, microstructure examination and microhardness testing.
这就更利于空位机制扩散，化学势梯度也相应增加。
This would be propitious to the diffuse of vacancy mechanism, and accordingly the chemical.
采用CS300P型电化学腐蚀工作站检测了梯度涂层的耐蚀性能。
The corrosion resistance of the gradated coating was tested using CS300P electrochemical corrosion workshop.
并指出当外加磁场感应强度梯度的方向和化学势梯度的方向一致时，传质效果最好。
When the direction of the magnetic field strength gradient and the direction of the chemical potential gradient is identical, the effect of the mass transfer is best.
主动吸收：亦称代谢吸收。指细胞直接利用能量做功，逆着电化学势梯度吸收离子的过程。
Active transport The use of energy to move a solute across a membrane against a concentration gradient, a potential gradient, or both (electrochemical potential) . Uphill transport.
金矿质在韧性剪切带中与氧化硅和硫化物形成配合物在深部流体中沿着化学位梯度方向迁移和富集。
In ductile shear zone, the gold is migrated and enriched in deep fluid with silica and sulfide in forms of the complex driven by the chemical potential.
本文还介绍了用化学气相沉积(CVD)的方法在碳纤维上制备梯度功能涂层的细节。
The functionally gradient coating on carbon fibers were developed with CVD and coated fibers were characterized.
本研究采用石油醚、乙醚、甲醇、水溶剂梯度提取法和多种柱层析法，对栽培橘黄裸伞子实体进行了化学研究。
The cultural fruiting bodies of the Gymnopilus spectabilis were phytochemical investigated using layer extracts with petroleum ether, diethyl ether, methanol and water and silica gel chromatography.
通过建立界面扰动模型，推导了三元固态置换反应系界面稳定性的化学势梯度判据。
A new interface-perturbation model of ternary system is suggested and the interface-stability criterion is derived in the form of chemical potential.
实验结果表明：布料时有序地改变反应物料的化学组成，可以在产物中不同区域产生不同尺寸的孔洞， 形成梯度多孔陶瓷。
The results show that, ordinal variations in the composition of the reactants during packing can get different sized pores and produce gradient porous ceramics.
方法采用镇静、催眠实验比较生、炒酸枣仁的药理活性，采用RP HPLC梯度洗脱法对生、炒酸枣仁进行化学成分的全成分分析。
Methods Their activity tests were comparatively carried out by the sedative and hypnotic experiments and the total components were analyzed by RP-HPLC.
结论：利用密度梯度离心和贴壁筛选的方法可以分离hmsc，联合应用免疫细胞化学、细胞化学和电镜等技术手段鉴定HMSC的方法有效。
Conclusion The HMSC can be isolated with density-grad centrifugal and anchoring screening. The method to identify HMSC with immunocytochemistry, cytochemistry and electron microscopy is effective.
结论：利用密度梯度离心和贴壁筛选的方法可以分离hmsc，联合应用免疫细胞化学、细胞化学和电镜等技术手段鉴定HMSC的方法有效。
Conclusion The HMSC can be isolated with density-grad centrifugal and anchoring screening. The method to identify HMSC with immunocytochemistry, cytochemistry and electron microscopy is effective.
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