1) Cracking velocity
开裂速率
1.
The failure zone model developed by Schapery is adopted to derive simple mechanical relations for predicting cracking velocity when macro cracks stably propagate in asphalt mixtures.
采用Schapery提出的局部衰坏区模型,推导了沥青混合料宏观裂缝稳定扩展阶段开裂速率的简单力学表达式。
2) Rapid crack propagation
快速开裂
1.
Proceeding from the point that polyethylene gas pipe should have long term strength and the capacity to re sist rapid crack propagation, discussions are held on related standards of ASTM, ISO, GB and its trend of develop ment.
从聚乙烯燃气管应具有长期强度和抵抗快速开裂的能力的角度。
3) crack probability
开裂概率
1.
A concept of dry shrinkage crack probability (C) has been put forward by which the concrete dry shrinkage crack probability could be devided into three levels named as: C≥60%(high risk),40%≤C<60%(medium risk)and C<40%(low risk).
介绍了一种评价混凝土收缩开裂的试验和评价方法,该法能够准确测量约束状态下混凝土干燥收缩时其内部产生的拉应力,特别是能够客观评价补偿收缩混凝土在弹性限制条件下抵御收缩应力的能力;提出了干燥收缩开裂概率C的概念,并将混凝土发生干燥收缩开裂的概率划分为C≥60%(高开裂风险),40%≤C<60%(中等风险)和C<40%(低风险)三种状态;试验表明,补偿收缩混凝土能够在混凝土中建立一定的自应力,可以有效降低混凝土的干燥收缩开裂概率。
4) crack rate
开裂率
1.
The flattening tests of metallic pipes with or without plate core indicated that (1) when the top and bottom sections of metallic pipes were flattened the results of the two types of tests were the same, (2) in further flattening, the top and bottom sections of hollow metallic pipes were dented and the crack rate was higher than those pipes tested with plate core at the same flattened distance.
通过对金属管内加板芯和不加板芯两种压扁方式的对比试验,结果表明:(1)当金属管由正常圆压至上下壁成平面时,两种压扁方式的试验结果相同;(2)在继续压扁时,无板芯金属管的上下壁由平面状态向管内凹入,其开裂率高于同样压扁距离下的有板芯金属管。
6) fission rate
裂变速率
1.
Multidimensional inertia and viscosity tensors are calculated with both irrotational flow and Werner Wheeler approximation,and the fission rate is calculated with multidimensional Kramers formula.
本文研究了鞍点附近多维的位能曲面及鞍点所在位置；并用ＷｅｒｎｅｒＷｈｅｅｌｅｒ及无旋液体等两种方法计算了多维的质量系数与粘滞系数，然后用多维Ｋｒａｍｅｒｓ公式计算了裂变速率。
2.
The fission rate calculated by test particles multi-passing over saddle point is lower than the one calculated by test particles firstly passing over saddle point,and the appropriate description of this quantity is given in this paper.
用试验粒子多次通过位垒方法计算重核在鞍点处的裂变速率,其结果明显低于以往所用首次通过位垒方法计算的值,更接近于断点处的裂变速率。
3.
The passing probability of nuclear fusion and the fission rate at the saddle point is calculated by an improved scheme with test particle muti passing over the saddle point,where a strong back streaming effect around the saddle is found and considered.
用实验粒子多次通过位垒的方法计算重核熔合与裂变过程中的熔合几率和裂变速率 ,结果发现位垒附近存在着一种强烈的回流现象 。
补充资料：穿晶开裂
分子式：
CAS号：
性质：金属材料开裂的金属学特征之一。裂纹由晶粒内部穿过。延性断裂的断口微观特征一般为韧窝状，脆性断裂的特征为解理或准解理花样。
CAS号：
性质：金属材料开裂的金属学特征之一。裂纹由晶粒内部穿过。延性断裂的断口微观特征一般为韧窝状，脆性断裂的特征为解理或准解理花样。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条