The application research on the waxed curing agent as poor concrete basis insulating layer;
论述了以石蜡、亚麻籽油为主要原料的混凝土养护剂的研制方法。
Reformers also need to take concrete steps to address the whole range of factors that hold poor students back.
改革派还需要更确切的方法来对付那一系列阻滞穷学生学习的因素。
Looking at concrete high-rise houses in poor rural areas, one may think that the life of farmers has changed.
看着贫困的农村地区立起水泥高层大厦，人们可能会觉得农民生活变好了。
The reinforced concrete roof, which the architects claim is one of the earliest examples of its kind in Ireland, was in poor structural condition, so was bolstered with steel beams.
屋顶采用钢筋混凝土的形式在爱尔兰是最早的例子，那时结构条件差，因此用钢梁来支撑。
This week rich and poor countries agreed on guidelines for releasing aid to save forests, in the first concrete sign of global action on climate change since Copenhagen.
本周，穷国和富国同意了为保护森林提供帮助的指导性原则，这是自从哥本哈根气候大会以来全球为应对气候变化采取的第一个切实行动。
Binding of new and used concrete is a issue often facing to project implementation and old and poor structure maintenance.
新老混凝土粘结是工程施工与老化病害结构修补补强中经常面临的一个问题。
Steel slag is not better to produce cement or mineral admixture of concrete because of poor grindability, larger fluctuation of chemical and mineral components, poor stability and so on.
由于钢渣成份波动大、易磨性差以及稳定性不好，钢渣用作水泥混合材或混凝土掺合料均难以达到高效、高值化利用的目的。
The main disadvantage of concrete is poor tensile strength and easy to crack.
混凝土最主要的缺点是抗拉能力差，容易开裂。
However, like general reinforcement concrete structure, a main problem in prestressed concrete is the poor corrosion resistance of steel tendon which may lead to the lower durability construction.
然而和普通钢筋混凝土一样，预应力混凝土中存在的一个主要问题是钢筋抗腐蚀能力弱，结构耐久性差。
The invention solves the problems of low damping capability and poor durability of the conventional concrete structure material per se.
本发明解决了现有混凝土结构材料自身阻尼能力低、耐久性差的问题。
It is necessary to dispose poor raw material before construction of self-waterproof concrete structure. It is advised to put forward construction plan when the code is not detail.
讨论了自防水混凝土结构施工前对品质低劣的原材料进行处理的方法；指出对规范要求不详尽处要进行具体分析，提出了细部施工方案。
The contact condition between PCC surface layer and poor cement concrete base course directly influences the space between joints and the loading stresses in the pavement.
水泥混凝土路面面层与贫混凝土基层界面的接触状况，不仅直接影响到路面的接缝间距，同时也对路面的荷载应力有较大影响。
Aimed at increasing the replacement amount of fly ash in hydraulic mass volume concrete, the poor calcium problem of moderate heat Portland cement-fly ash system was studied.
为了提高水工大体积混凝土中的粉煤灰掺量，研究了中热水泥-粉煤灰体系的贫钙问题。
But there were some problems of defective concrete function, poor network stability, less specialized operator, and lack of acknowledge by the institutions.
但存在具体功能欠缺、网络稳定性差、操作人员欠熟练、机构缺乏认识等问题。
The thesis has some practical value. It makes exposition and conclusion about constructing links of cement concrete roads and the reasons for arising poor quality.
本文就水泥混凝土路面施工环节及产生质量问题的原因进行了阐述和归纳，有一定的实用意义。
The traffic bridge on the Yingzi Floodgate is a reinforced concrete well-pile bridge of poor safety.
营子闸交通桥是一座钢筋混凝土井柱桩式桥梁，桥梁状况较差。
Concrete foundations need not always be reinforced, but where the load to be carried is high and the bearing capacity of the soil poor, heavy reinforcement is usually necessary.
混凝土基础不必总是用钢筋来加固。但是，若承受的荷载很大，而且地基的承载力又比较低，通常有必要用钢筋进行大力加固。
This means that the airtight of the raw concrete material is poor.
这说明单用混凝土材料建池密封效果差。
The problems that in the concrete of the low and minus temperature building, as the superfluous material and their poor qualities bring great hidden trouble to the building project.
低温及负温混凝土施工所用混凝土外加剂存在质量问题，如氯盐量、硫酸钠掺量过高、外加剂质量差等，给建筑工程带来极大隐患。
However, there are many shortcomings of concrete; the key point is that poor cracking resistance.
但是，混凝土也有许多缺点，关键的一点就是抗裂性能差。
In view of the poor link in the practice for the PLC theory teaching, this paper suggests a better way to solve the problem by using the concrete PLC control model system.
针对PLC课程教学中实践环节的不足，利用具体的PLC控制模型系统是一个较好的途径。
In the earthquake, the common transverse reinforcement can not be effectively restrain, resulting in seismic behavior of the high-strength concrete columns is poor.
在地震作用下，普通箍筋不能对构件形成有效地约束，导致高强混凝土柱抗震性能较差。
Most damage of concrete runway in cold region is not caused by load but by the poor durability of concrete.
寒冷地区机场混凝土道面常常发生非荷载引起的破坏———耐久性破坏，严重影响飞机的安全起降，必须尽快予以解决。
Results show that the photocatalyst immobilized on concrete exhibits excellent photocatalysis, while the photocatalysis of bituminous mixture is poor.
研究表明：水泥混凝土负载的光催化剂具有优越的光催化功能，而沥青混合料的较差。
There are many problems existing in the engineering application of concrete vertical-hole hollow block masonry, for instance poor thermal insulation, seepage and crack.
针对混凝土竖孔空心砌块存在的热、渗、裂等问题，本文提出并研究了一种混凝土横孔空心砌块。
Concrete is one of the brittle materials, which has low tensile strength, poor toughness and poor impact resistance.
混凝土是一种脆性材料，具有较低的抗拉强度、韧性和抗冲击能力。
Concrete is one of the brittle materials, which has low tensile strength, poor toughness and poor impact resistance.
混凝土是一种脆性材料，具有较低的抗拉强度、韧性和抗冲击能力。
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