1.
Hereditariness of Direct Sum Decomposition to Direct Summand and Cancelation of Modules;
模的直和分解对直和项的遗传性与直和消去
2.
He has always associated with large enterprises.
他一直和大企业有来往。
3.
Pen and pen-cil, ru-ler, book, ru-ler, book
钢笔和铅笔，直尺和书本。
4.
so the long straight stems of bamboo are not like tree wood.
所以它长长的直直的竹竿和树干不同。
5.
The Properties of Sorgenfrey Line and R Real Line in General Topological Space;
Sorgenfrey直线和R实直线拓扑空间的性质
6.
Direct costs are those that form the part of the product, e.g. direct labor, direct materials and direct expenses.
直接成本是构成产品实体的成本,如直接人工、直接材料和直接费用。
7.
the locus of feelings and intuitions.
感情和直觉的中心所在。
8.
It was a waste of time and money.
简直是浪费时间和金钱。
9.
merits and demerits
优点和缺点, 是非曲直
10.
direct English access and control
直接英语存取和控制
11.
in line with
和...成直线,排成一行
12.
gear pin diameter and effective facewidth
针齿直径和有效齿宽
13.
the two points A and B are vertical to each other
A点和B点互相垂直
14.
The master and mistress have been worried!"
先生和太太都直不放心
15.
scaffold and hoist equipments
脚手架和垂直升降设备
16.
direct-current measuring transductor
直流测量用饱和电抗器
17.
Let AB and CD be perpendicular to AD.
设AB和cd都垂直于AD。
18.
vertical gradients of salinity and temperature
盐度和温度作垂直分层