often occur的例句大全

For example, as heat expansion coefficient of SLA prototypes from acrylic epoxy resin is usually larger than that of the mould in the course of sintering, mould cracks often occur without some technical measures so that we can't pour liquid metal.

例如，SLA系统制作的丙烯酸环氧树脂原型存在焙烧过程中膨胀系数大于铸型的膨胀系数，若不采取一定的工艺措施，往往会使铸型开裂，而无法浇注金属液；

Results The incidence rate of colonic ileus complicated with severe pancreatitis is 3.9%. Its location often occur to splenic flexure and transverse colon. Clinical symptom always appear in two or three months after non operation therapy and progressive aggravate.

结果本组重症急性胰腺炎并发结肠梗阻发生率为3.9%，其发生部位多位于结肠脾曲及横结肠，梗阻症状多在重症急性胰腺炎行非手术治疗后2～3个月内出现并进行性加重。

The most common accident is a multi-car rear-ends collision accompanied by fire and explosion. Such accidents often occur in the larger volume of traffic, higher speed, bad weather ( rain, snow and fog), etc. But driving members are the dominant causes.

最常见的事故是多车追尾相撞，并同时伴有起火、爆炸，这种事故多发生在交通量较大、车速较高、天气恶劣（雨、雪、雾）等情况下，而驾驶员的原因占主导地位。

Memory leaks often occur in Java when objects hold on to references inappropriately.

在Java中，当对象被不适当地引用时，内存泄漏时常发生。

These things often occur, such as the confidential data of government or companies being stolen, computer virus deletes some important data on personal computer.

政府或公司的机密数据被黑客盗取、个人计算机被病毒感染造成重要数据被删除等这些事件时常发生。

The ordinary spherical seal method is used in hydraulic swing arm, but its practise proves that the phenomenon of permeating and leaking oil often occur.

目前使用的液压推靠器中普遍采用了球形密封方法，实践证明该方法常有渗、漏油现象发生。

Signomial geometric programming ( SGP ) problems often occur in engineering design and management.

符号几何规划 ( SGP ) 问题经常出现在工程设计和管理中.

In the initial interview, researchers provided adolescents with a number of cards describing events that often occur within relationships, including everything from hand-holding and kissing to sex, Soller said.

在最初的测试中，研究者们提供青少年许多带有描述经常会出现在恋爱中的事情的卡片，这是事情小到牵手大到接吻，索勒说。

The problems of definition domain, break point, or and even etc often occur in elementary function.

定义域、间断点、或与且等问题是初等函数经常遇到的问题。

Positive time-order-error often occurred in the judgement off-short time interval, negative time-order-error was more likely to occur in longtime interval.

对短时距的判断通常表现为正时间顺序误差，而对长时距的判断则表现为负时间顺序误差。

Frost of plant often occur on cloudless night with low atmospheric temperature and air humidity.

植物的霜冻一般是发生在空气温度和湿度较低，且天空无云的夜晚。

The return during the interchange from offensive to defense is rather difficult, and the goals often occur to the time of interchange of possession.

由攻转防瞬间防守球员迅速回位比较困难，而进球也往往发生在比赛球权转换的这一瞬间。

Bridge is the important lifeblood of the transportation field. The disastrous bridge collapse accidents often occur at home and abroad.

桥梁是交通领域的重要命脉，目前影响桥梁安全的灾难性事故在国内外时有发生。

Foreign object damage ( FOD) events to fan/ compressor blades often occur during the operation of aeroengine. They are very dangerous to the flying safty of aeroengine and aircraft.

航空发动机在其工作过程中会发生风扇/压气机叶片的硬物损伤事件，给发动机和飞机的飞行安全带来危害。

Oily contaminants often occur on the surface of continuous tinplating electrolyte in many cases, which may have a serious inverse effect on the surface quality of tinplate, and increase the cost and waste of production.

高速镀锡电解槽液表面常会出现“油污”现象，严重影响了镀锡件的产品质量，增加了原料消耗和镀液排放量。

Wheel type construction equipments are widely used in transportation, water conservancy and electric power projects. They often have to travel on rough roads so wheel wear and wheel shaft fatigue often occur due to much wheel skid.

轮式工程机械用于交通建设、水利电力等工程施工，经常行驶的路况较差，车轮容易出现打滑，使车轮磨损、车轴疲劳。

Two abnormal phenomenon often occur during the operation of 35 kV parallel connective reactor at 500 kV Shenzhen Substation, one is the malfunction of over current relay when the reactor puts into operation and the other is the overheat of its metal enclosure.

500kV深圳站变低35kV并联电抗器在运行过程中，时常发生在投运时过流保护动作及运行时周边围栏发热的异常情况。

Hirsutism often occur later, it refers to the excessive growth of terminal hair in women, with distribution and growth characteristics like men.

雄激素性多毛症指女性终毛过多，且呈男性型分布和生长特征，常比痤疮更晚出现。

Bronchial tube asthma ( i.e. asthma) is a kind of common and frequently-occurring disease often occurred in respiratory system in recent years, and its prevalence rate and the case fatality rate globally has a increasing tendency year by year.

支气管哮喘（简称哮喘）是呼吸系统的常见病和多发病，近年来其患病率和病死率在全球范围内有逐年增加的趋势。

Under hot and humid climate, blisters often occur in the painting film of car body.

在湿热气候中，汽车车身漆膜往往会出现水泡。