It produces a poor surface finish; tool wear is high.
它生成很差的表面光洁性且刀具磨损非常大。
Spray: spray leakage, poor surface roughness, and the powder is easy to fall.
喷塑差的：漏喷，表面粗糙，而且喷粉易掉。
However, in case of ductile materials they cause poor surface finish and low tool life.
可是在塑性材料加工时，造成表面光洁度和刀具寿命低。
Zinc concentration coating crystallization is fine, low and high concentration of crystallization thick, poor surface gloss.
锌浓度偏低镀层结晶较细，而浓度高结晶粗，表面光泽差。
Glass and ceramics also have high volume resistivity, but poor surface properties at high humidity and often-poor piezoelectric properties.
玻璃和陶瓷也具有很高的体电阻率，但是在高湿度下表面电阻率性质较差，并且其压电性常常也较差。
There fore, poor surface fineness becomes an important topic of current press forming technology to be investigated, which demands people to deepen their recognition.
因此，面形状精度不良问题已成为现代冲压成型技术的一大重要研究课题，目前人们对它的认识还要进一步深化。
A wafer with poor surface quality has hidden risks of stress concentration and little cracks, which would cause a huge damage of bursting crack when dicing the wafer.
表面质量不好的晶圆会存在应力集中、裂缝等隐患，在分割晶圆片时，会导致晶圆崩裂的巨大损失。
Because of the effect of CPU-calculating speed, the procedure of machining is carried out point by point from calcuation to cutting intermittently , leading to poor surface quality on the workpiece.
通过反复改变工艺系统的参数，最终有效地提高了工件的表面质量，保证了工件的加工精度，从而在由工艺系统弥补编程系统的不足方面做了有益的尝试。
The NCDC believes, on the basis of preliminary data and in a way that Mr Watts disputes, that the evidence for poor siting does not affect the overall trends in the surface record.
美国国家气候资料中心认为，根据原始数据以及从瓦特先生的争论方式上看，证明选址不佳的证据并不影响全部地表记录的走向。
By contrast, the cells that comprise the bulk of most tumours lack these surface proteins and are poor at creating new tumours.
相反，肿瘤中大部分的细胞没有这种表面蛋白，生成新肿瘤的能力也很弱。 评：从上下文来看，相反这个词不恰当。
Poor tooth surface impacts the horse's capability to maintain a proper weight.
牙齿表面的状态不好，会导致马难以维持恰当的体重。
It is difficult for alkali lignin of wheat straw produced by alkaline pulping to be widely used in industry because of its poor solubility and surface activities.
尤为严重的是碱法制浆产生的麦草碱木素由于水溶性和表面活性差而难以在工业上得到广泛应用，从而造成对环境的严重污染。
The surface hydrophobicity of the samples coated with TDI/castor oil is improved greatly compared with the pure TPS, while the samples coated with TDI/PEG have poor hydrophobicity.
TDI/蓖麻油体系涂层样品表面的疏水性能与TPS相比有了很大的改善，而TDI/PEG涂层样品表面的疏水性差；
Surface water resources in Liaohe river basin middle and downstream are poor.
辽河流域中下游地区地表水资源贫乏。
Due to their poor chemical durability, it is proposed to coat a layer of organosilicon (with 97% visual light reflectance) on the glass surface which will dramatically improve their chemical duration.
这类玻璃的化学稳定性较差，当表面涂以可见光反射率为97%的有机硅层后，稳定性显著提高。
The crack is induced mainly by poor metallurgical quality of the shaft and the crack that occurred on the shaft surface before surface treatment.
零件冶金质量差，且表面处理前零件表面存在裂纹，是涡轮轴产生裂纹的原因。
Good and poor quality of cooling water have influence on wire rod, especially on surface quality.
冷却水质的优劣对高线盘条的质量有一定的影响，尤其是对表面质量影响较大。
The wind erosion hazard is often intensified by the poor vegetation cover and loosen surface soil due to the freezing and thawing over winter.
春季风大风多，降雨量少，气候侵蚀力高，地表植被覆盖率低，土壤表层由于冻融作用变的松散，是一年最易风蚀的季节。
The ability of destroying surface antigen of type B hepatitis virus for both methods was greatly poor.
两者对于乙肝病毒表面抗原的破坏率均极为低下。
Due to the great hardness and poor fluidity of plastics, this technology can only make the surface hardness of a product grade HB, failing to meet the actual requirements of application.
由于塑料硬度越高，流动性越差。因此采用此种工艺，制品表面的硬度只能达到HB级，无法满足实际使用需要。
OVX Group: the bone plate of implant surface was thinner and poor continuity.
OV X组：种植体表面结合骨板较薄，连续性差。
As a hydrophobic material, however, PDMS has very inert surface properties, such as poor wettability and weak adhesion, so it is necessary for PDMS to modify its surface properties.
但是作为一种疏水性较强的芯片材料，PDMS存在着表面润湿性、粘接性差等问题。
One is metal rich and relatively massive with large gravity, while another metal poor with lower mass and surface gravity.
另一类贫金属星，其质量和表面重力都相对偏小。
Xuehu coal main and subsidiary well have deep shaft, thick surface soil and strong disability, poor pourability in the hydrated grope rock and complex geology condition.
薛湖煤矿主、副井井筒井深、表土厚且膨胀性强、基岩含水层可注性差、地质条件复杂。
The low surface energy of polymer-based substrates often leads to poor adhesion of inks, glues and coatings.
在低表面能的聚合物为基础的基板往往导致贫困的粘附油墨，胶水和涂料。
Aiming at the poor practicability of existing surface graphic mapping methods, a new graphic mapping technique on a NURBS surface is presented.
针对现有曲面图形映射方法实用性不强的缺陷，提出了一种NURBS曲面图形映射方法。
Can also survive for weeks in oxygen-poor stagnant ponds and canals by breathing air at the surface with its functional lung.
可以也几个星期中生存贫氧停滞池塘和管呼吸空气及其功能的肺的表面。
Can also survive for weeks in oxygen-poor stagnant ponds and canals by breathing air at the surface with its functional lung.
可以也几个星期中生存贫氧停滞池塘和管呼吸空气及其功能的肺的表面。
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