一九一一年五月,发现“蜉蝣号”飞艇的升力不足.In May 1911 the Mayfly was found to lack sufficient lift to get airborne.桥面横断面可能由于过量的升力而发生扭转.The cross section of a bridge deck may twist as a result of excessive life.这一诱导气流产生正的力矩,该力矩随升力或迎角a的增加而增加...
...equality of the sexes.男女平等The Commission for Racial Equality teaches organisations not to discriminate.种族平等委员会告诫各家机构不要心存歧视。The main beneficiaries of pension equality so far have been men.迄今为止，退休金均等政策的主要受益者一直是男性。Adopt ...
Builders must fasten down roofs of newly-built homes more securely.建造工人必须把新建房屋的屋顶固定得更牢靠些。Ensure that the frame is securely fixed to the ground with bolts.确保用螺栓把框架牢牢地固定在地面上。He knotted the laces securely together.他把带子紧紧地系在...