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Effects of dry temperature and dry time on properties of heat cured sand and the relationship with binder composition are as follows:sands bonded by binders that are not modified have high strength when dry temperature is high and dry time is long,but their anti-wettability power is poor . Sands bonded by binders that are modified by B but not modified by M can be dried quickly and sand strength is high but anti-wettability power is also poor. Sands bonded by binders that are modified by M but not modified by B can also be dried quickly to obtain maximum strength,then the strength becomes lower when they are dried continually for more time. and sand strength is high but anti-wettability power is also poor. Sands bonded by binders that are modified by M as well as by B at the same time can be dried quickly to obtain maximum strength at low temperature and short time. But the anti-wettability of sand mold is best when they are dried at high temperature and long time.

烘干温度和烘干时间对热硬砂性能的影响及其与粘结剂改性的关系是:未经改性剂B和改性剂M改性的粘结剂砂,脱水速度较慢,烘干温度越高,时间越长,则硬化强度也越高,但未经改性的粘结剂热硬砂的抗吸湿性较差;经改性剂B而不经改性剂M改性的粘结剂热硬砂,烘干硬化速度较快,强度也高,但在高湿度下的抗吸湿性不好;经改性剂M改性而不经改性剂B改性的粘结剂热硬砂,烘干时强度先随烘干时间升高至最大值后,继续烘干时强度又出现下降;经改性剂B和经改性剂M共同改性的粘结剂热硬砂能在短时间和较低的烘干温度下就可烘干到最高强度,即烘干脱水的速度较快,但试样的抗吸湿性差,若在更高温度和更长时间下烘干,试样的抗吸湿性得到改善,综合考虑烘干强度和抗吸湿性要求,对于φ30×30mm试样,理想的烘干温度是200℃,烘干时间20分钟。

When operating under a single-line condition, the changes of air temperature and humidity of different point in the sprinkling area are not same .

单支管喷灌时,各点的温度和湿度变化相差很大;在有风时,这种变化更为显著,顺风侧的温差和相对湿度差要明显的大于逆风侧的。

The environmental laboratory has 1,110 m 2 , in the possession of 20 advanced test equipments that both from China and other countries such as USA , France , Italy , Japan , etc. The speed of decreasing temperature could reach 15 ℃/min, the raising speed of temperature could reach 30 ℃/min and be capable of adjustment continuously. 29 m 3 test box could test temperature, temperature and humidity for large electrician and electronic equipment. The speed of raising temperature could reach 6 ℃/min at best. Vibration test equipment include slipway, it could carry through three axis vibration, and the minimum thrust force is 5 tons.

环境实验室建筑面积 1100 平方米,拥有从美国、法国、意大利、日本等国家引进的国外及国产先进试验测试设备 20 台,降温速度最高可达到 15 ℃/min ,升温速度可达 30 ℃/min且连续可调; 29 立方试验箱能对大型电工电子设备进行温度、温度循环及湿度试验,升温速度最高可达 6 ℃/min ;振动试验设备有滑台,可进行三轴向振动,最大推力可达 5 吨。

In the worksite,pay attention to air flowing. Do not work in rain or humidity weather.

施工过程中,应注意施工现场的通风,雨天及湿度过大时不宜施工。

Now the tools used for measuring dental cast which is pivotal for saving the information are rule and brass wires , the result of it is effected by manipulator , precision and efficiency are ecumenic , It is very difficult to keep the dental cast well because it is effected by temperature and humidity easily .

作为口腔正畸过程中重要信息存储源的牙颌模型,目前临床测量方式还停留在利用卡尺,铜丝等简单工具进行徒手测量分析的阶段,这样所得的结果受操作者主观影响较大,精度有限,效率较低,且由于模型易受温度,湿度等的影响,长期保存较为困难。

Especially,it is greatly affected by temperature,humidity and other treatments during malting.

它不但受大麦品种本身遗传因素和环境条件的控制,制麦期间的温、湿度以及其它各种理化处理对其也有很大影响。

The condium diluted with water or potato dextrose liquid medium could produce melanic appressoria in glass slide in 12 hours or in corn leaf surfaces in 24 hours.

在一定湿度条件下,影响玉米大斑病菌附着胞生长和发育的决定因素是温度。

For government agencies, the Chief of a number of important enterprises and institutions of the preservation of archives, archives of the humidity is too large, the data susceptible to mildew damage is not conducive to long-term preservation of information, the following can be an effective solution to dehumidification equipment moistureproof files mold problem.

用于政府机关、行政企事业单位的一些重要档案资料的保存,档案室的湿度过大时,资料易发生霉变损坏,不利于资料的长久保存,采用以下除湿设备可有效解决档案的防潮防霉问题。

Keep the paper good planeness, attention should be paid to the quality of the source from the baguanhe control: one is to maintain the stability of the paper into the paper do not just immediately put into use, it is best to rotate over time to better use the result; the other is stored on paper warehouse and cutter workshop and business card printing and membership card-making workshop of temperature and humidity, to maintain the equilibrium conditions, cannot be placed within a larger geographical imbalance in order to prevent the occurrence of the deformation.

保持纸张良好的平整度,应注重从质量源头上进行把关控制:一是要保持纸张性能的稳定性,刚进的纸张不要马上投入使用,最好旋转一段时间后使用效果较好;二是存放纸张的仓库和切纸车间与制卡和会员卡制作车间的温、湿度,要保持相应的平衡条件,不能存放在较大的悬殊情况,以防止变形情况的发生。

It is thought that the more dramatic changes in temperature and moisture on the soil surface are deleterious to sclerotia.

人们认为土壤表层的温度和湿度变化越大对菌核的存活越不利。

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According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm~150rpm时取得最大值,此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世,形体几无变化。

When I was in school, the rabbi explained everythingin the Bible two different ways.

当我上学的时候,老师解释《圣经》用两种不同的方法。