One of the devices most prized by gadget collectors, the Curta Calculator is a modern Difference Engine - an entirely mechanical calculating machine capable of great precision.
最受装置收藏家推崇的设备之一，CURTA计算器是一台现代差分机——一台能进行高精度计算的全机械结构计算器。
Subgrade and pavement mainly bear the vehicle loads under the transport conditions. The actual working state of the subgrade and pavement has difference from the static mechanical calculation system.
路基路面结构在运营中主要承受交通车辆的作用，它的实际工作状态与现行的静态力学计算体系有较大的差距。
What is the difference between Mechanical Engineers and Civil Engineers ?
机械工程师和土木工程师的区别是什么？
What is the difference between mechanical engineers and civil engineers?
什么是机械工程师和土木工程师的区别？ ？
OBJECTIVE: To explore mechanical property difference in the different mixing ratio of PMMA.
目的：探讨不同混合比例聚甲基丙烯酸甲酯的力学性能差异。
Due to the difference in stress paths between the loading and unloading conditions, it is unsuitable to apply mechanical model under loading condition to stability of tunnel excavation.
由于岩体在加载和卸载条件下应力路径的不同，仅采用加载条件下所建立的力学模型来研究隧道的开挖稳定性问题是不适合的。
This paper summarizes the mechanical properties of a variety of polyvinyl chloride, the difference of ageing resistant performance and the influence on quality of film products.
文中介绍了不同型号聚氯乙烯的力学性能、耐老化性能的差别，及其对薄膜制品质量造成的影响。
The results show that, because of the difference of mechanical properties of P91 steel, its microstructure images, sub-structure and carbides are different correspondingly.
结果表明，在力学性能不同的情况下，P91钢的金相组织形貌有所差异，其亚结构和碳化物的形态也相应有所不同。
There was no significant difference of mechanical characters of elongation among brachial plexus nerves between male and female(P > 0.05).
男、女胎儿臂丛神经之间拉伸力学性质差异无显著性意义（P>0.05）。
But, because some reasons of manufacturing, even if the motors have same model and rating, there still exist difference on mechanical properties between them.
但是，由于制造上的原因，即使型号、规格相同的电机也存在着机械特性差别。
Because of the obvious difference of the mechanical properties between the surface layer and its base, the strength analysis with neglecting surface layer will result in error not to be ignored.
由于模具表面层与基体材料的机械性能有明显的差异，忽略表面层进行的模具强度分析将产生不可忽视的误差。
In the continuous composite beam bridge, the difference in type, arrangement area and arrangement space of shear connectors will cause variation in mechanical characteristics of the structure.
在连续组合梁桥中，剪力键的类型、布置范围和布置间距的差别将引起结构受力特性的差异。
There is essential difference between the mechanical condition of unloading engineering rock mass and loading engineering rock mass.
卸荷状态工程岩体的力学条件与传统的加载岩体有本质的区别。
The results show the concrete difference of mechanical properties of marble under loading and unloading conditions and offer important references to engineering problem.
这一结果揭示了大理岩在加、卸载条件下力学特性的具体差异，对解决工程实际问题有重要的参考价值。
There is a distinct difference between tensile and compressive modulus. Xylem is a kind of anisotropic material and modeling its mechanical model needs anisotropic constitutive relations.
拉伸弹性模量与压缩弹性模量有明显差异，木质部属各向异性材料，建立力学模型应采用各向异性的本构关系。
Results: After transverse fracture of mandibular condyle, mandible bone density and mechanical function were reduced, but there was not apparent difference on opposite side comparison.
结果：髁突横断骨折后引起下颌骨骨密度及生物力学性能轻度下降，但与健侧比较无明显差异。
What is the difference between mechanical engineers and civil engineers?
机械工程师和土木工程师有什么区别？
There was no obvious difference in the pulmonary function lesions between the severe patients treated with mechanical ventilation and those not.
重症患者使用机械通气治疗组与未使用机械通气治疗组肺功能损害差异不明显。
The mechanical analysis is made on anti-slide pile with a new model of finite difference method.
通过抗滑桩结构的力学分析，建立了抗滑桩结构的有限差分模型。
There is quite a difference between this kind of vertical vessel and conventional vertical vessel with respect of structure and mechanical model.
它在结构上、力学模型上与常规立式容器力学模型有很大区别。
This is an important difference because mechanical flaws are usually cheap and easy to solve while design flaws are potentially devastating.
两者存在重大区别：机械缺陷往往容易解决、成本不高，而设计缺陷可能是毁灭性的。
There was no difference in the incidence of pulmonary complication and mechanical support time in patient with delayed sternal closure and non-delayed sternal closure (P>0.05).
延迟关胸病儿术后肺部并发症发生率和呼吸机使用时间与非延迟关胸者差异无显著性（P >0 0 5 ）。
The three types of cements used had no significant difference between luting results just by mechanical characteristics.
单纯从力学角度看，三种黏结剂对固定义齿黏结效果无明显差异。
During mechanical longwall top coal mining, the gas permeability in top coal ahead of working face has bigger difference compared with slice mining due to the increase of mining height.
综放开采由于采高的加大，导致采场前方顶煤中瓦斯渗透性与分层开采有较大的差异。
The material has no difference from common medical PVC in mechanical property. except the excellent anti-infective property. The material has been passed biocompatibility safety assessment.
医用抗感染PV C材料同普通医用PV C材料在机械性能上相差不大，但抗感染性能优异，通过了生物安全性评价。
The paper studied difference of mechanical properties between single fiber drawing and multifil drawing of PET filament.
本文比较了涤纶长丝的单丝拉伸与复丝拉伸的断裂强度、断裂伸长及分布和初始模量。
The paper studied difference of mechanical properties between single fiber drawing and multifil drawing of PET filament.
本文比较了涤纶长丝的单丝拉伸与复丝拉伸的断裂强度、断裂伸长及分布和初始模量。
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