查询词典 cracking

The service life of a brake disc depends on the temperature status during emergency braking. How to forecast the surface temperature and its distribution accurately becomes the key technology to study surface wearing, metallographic transformction and thermal cracking of the brake disc.

紧急制动时的制动盘温度状况与其使用寿命密切相关，而如何准确预测制动盘摩擦表面的温度及温度场分布成为研究摩擦制动盘表面磨损、金相转变及热裂纹的关键技术。

Self-fluxing Fe-Cr-Ni-B-Si alloy prowders are laser clad on medium carbon steel substrate of dimensions 80×35×10mm〓. The investigation results of this clad layer are: micro-defects, micro-cavity and occluded forin substance, are the micro-cracks and crack resourses in clad layer; crack of coating propagates along the boundary of two kinds of eutectic sutructure; The included angle θ between the cracking direction and laser scanning direction in multitrack overlapping clad is smaller than that in one-track clad because of crack propagating along crystalline growth direction and crystalline direction in overlapping zone being different from it in one-track clad.

在调质态的45〓钢表面，采用预置粉末法进行FeCrNiBSi合金的多道搭接激光熔覆，对其熔覆层进行分析表明：多道搭接激光熔覆层裂纹扩展方向与激光扫描方向间的夹角θ与单道熔覆时相比明显变小，前者θ0°，后者θ角基本都为90°，这主要是因为多道搭接时，搭接区结晶方向发生了变化以及裂纹沿结晶方向扩展所致；激光熔覆层裂纹大多是以覆层与基材交界面的孔洞、熔覆层内不同方向共晶团间的显微缩孔、夹杂物的边界等三种显微缺陷作为裂纹源，并沿低熔点物相形成元素偏析造成弱化膜的共晶团界面扩展延伸。

E. , gasoline including catalytic cracking gasoline, reforming gasoline and some commercial gasoline and diesel oil including first-cut, second-cut and third-cut diesel oil, were studied for their RON and flash point, respectively.

近红外分析方法是目前发展比较迅速的一种快速分析方法，它具有快速、准确、重复性好、无污染、便于实现在线分析等特点，因此被广泛应用于石化行业的各个领域。

The computational model andsimulation method are tested by post-process and visualization of experimentalresults. The application of 2-D Particle Image Velocimetry is also discussed.8 Optimal design of the furnace tube system in an ethylene-cracking furnace isstudied as a practical example. Screw-pitch of the static mixer unit andinstallation layout of tubes with static mixer is discussed.

讨论了先进的二维PIV实验方法应用的可能性。8、以一台典型的工业炉——乙烯裂解炉为例，对静态混合式炉管进行结构优化设计，优化参数涉及元件螺距、安装方式——如安装间距、安装个数、安装方向和相位角等，提出随着静态混合元件的螺距的增大，安装间距也在增大。

As an example of application, the study on small scale shear failure of Al-Zn-Mg-Cu plate under complicated strain and stress states, especially within the plastic zone ahead of a pre-crack, would promote our understanding of the fracture mechanism, of the shielding effect caused by cracking path deflection, and of the mechanism of fracture toughness anisotropy of textured high strength aluminium alloys.

作为一个应用实例，本文关于Al-Zn-Mg-Cu厚板在复杂应力应变状态下的小尺度剪切失效机制的研究，对于了解工业高强变形铝合金的断裂过程、了解裂纹扩展途径偏斜所引起的shielding效应、了解断裂特征和断裂韧度的各向异性等实际问题也是很有启发的。并已被Materi-als Science and Technology认为是&an interesting piece of work containingsome original idea s&。

The results showed that the surface layer and the bottom layer of the road pavement experience the repeated horizontal tensile and compressive stresses under cyclic loading and small residual tensile and compressive stresses build up in the surface layer and bottom layer respectively. This is probably one of the factors causing top-down or bottom-up fatigue cracking in the asphalt pavement.

结果表明在循环荷载作用下，路表和沥青层底都经受水平压应力和拉应力的重复作用，且在路表和沥青层底分别产生少量的残余拉应力和残余压应力，这有可能是造成沥青路面从上到下或从下到上疲劳开裂的原因之一。

The extra-thickness of the bottle and the special design of the screw ring prevent the product from cracking and spilling.

特殊加厚瓶身及深螺牙设计，不慎掉落时，奶瓶不易破裂亦不会造成奶水外溢。

It is important to understand the tar evolving and cracking behavior in the fluidized bed gasifier. With peanut shell, rice straw and saw dust as raw materials, the gasification was carried out in a pilot scale fluidized bed gasifier at variant temperatures (750℃~850℃), air equivalence ratio (0.15~0.35) and catalyst addition. Simultaneously, tar component was analyzed using gas chromatograph with mass selective detector.

为了了解生物质流化床气化过程中焦油的析出和脱除特性，以花生壳、稻草以及木屑为原料，采用流化床气化反应系统，研究了气化温度(750℃~850℃)、空气当量系数(0.15~0.35)以及催化剂（白云石、橄榄石与菱镁矿）的添加等对气体产物中焦油的析出组成特性的影响，并采用色谱-质谱联用仪对焦油的主要成分进行了分析。

The method solves the problems better through adopting the following technical proposal that: the method takes the solid super acid consisting of the VIB group elements or the VIB group elements and the IVB group elements in the periodic table of elements and loaded on a symbiosis molecular sieve as catalyst, and naphtha with the component being C4-C10 as a raw material so as to carry out catalytic cracking reaction at a temperature of between 550 and 700 DEG C, under a pressure of between 0.01 and 0.5 MPa, at a reaction weight space velocity of between 0.1 and 4 hours and with the weight ratio between water and naphtha of between 0.5:1 and 4:1, thereby generating ethylene and propylene.

本发明涉及一种催化裂解制乙烯丙烯的方法，主要解决现有催化裂解制乙烯丙烯催化剂的使用温度高，活性低，乙烯丙烯选择性差的问题，本发明通过使用在共生分子筛上负载由元素周期表VIB族元素或VIB族元素和IVB族元素组成的固体超强酸作为催化剂，以组份为C 4 ～C 10 的石脑油为原料，在反应温度为550～700℃，反应压力为0.01～0.5MPa，反应重量空速为0.1～4小时-1 ，水/石脑油重量比为0.5～4∶1的条件下，进行催化裂解反应生成乙烯丙烯的技术方案，较好地解决了该问题，可用于催化裂解制乙烯丙烯的工业生产中。

Here, Gary Oldman is watching and shivering along with everybody else, cracking jokes to keep warm.

在这里，盖瑞欧德曼和所有其他人一起在现场观看、发抖、说笑话取暖。

What was it that made you want to change sider ?

是什么使你临阵倒戈？

I don't know what he wants, but let's play along with him.

我不知道他要干什么，可我