1) man-made prefab slob
人工预留缝
2) preparatory circumferential welding seam
预留环缝
1.
Opportune time for shuting preparatory circumferential welding seam of penstock′s expansion section
压力管道伸缩管预留环缝合拢时机研究
3) setting up wide construction joints
预留宽缝
1.
Effect of setting up wide construction joints for a shiplock floor built on different foundations;
不同地基坞式船闸结构底板预留宽缝施工方法效果分析
2.
Effect of setting up wide construction joints for a castle shiplock floor built on rock foundations;
岩基上坞式船闸结构底板预留宽缝施工方法效果分析
4) fixed fissure in advance
预留缝
1.
By means of summarizing internal and external documents and comparing experimental results, the calculating formula of stress and strength factor for concrete finite boy having ellipse fixed fissure in advance is revised.
文章通过总结国内外文献并对照试验结果,对内设椭圆形预留缝的有限体混凝土应力强度因子的计算公式进行了修改,并对具有不同预留缝形式的混凝土试件的轴拉试验结果进行比较分析,推算出把带有矩形预留缝的混凝土试件简化成带有椭圆形预留缝的试件时的修正系数。
5) allowance weld
预留焊缝
6) pre leaving crack
水平预留缝
补充资料：人工受精与人工授精
人工受精与人工授精
artificial fertilization and artificial insemination
我国学者把“人工受精”与“人工授精”两名词区别开来：前者指人工体外受精而言，后者指把精液注入到妇女的阴道或宫颈管、宫腔内，使精、卵在体内相遇。人卵体外受精与胚胎移植后出生的婴儿俗称试管婴儿。
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