necessitate造句
The occurrence of peptic ulcer in some pa - tients with hiatal hernia may
necessitate considerationof both diagnosis.
对一些裂孔病患者,出现消化性溃疡时,须考虑两种疾患的诊断.
The agglomeration and sintering of fine particles can
necessitate a lowering in temperature of operation.
由于微粒易于聚集和烧结,不得不降低操作温度.
To map 100 mutants by this method would
necessitate nearly 5,000 crosses.
用这种方法来绘制100个突变型的遗传图就要做5000个杂交.
This may
necessitate transmitting and receiving signals in different frequency bands.
这可能使在不同频段内发射及接收信号成为必要的.