non-uniform settlement of the part of building(box culvert) crossing the levee of dongting-lake appears in its usable life affects its operation, and even leads to rupture.
洞庭湖部分穿堤建筑物(箱涵)运用期间发生不均匀沉陷,影响运行甚至破损断裂。
store in seal drum at room , dry place , usable life 2 year.
产品密封包装后贮存于阴凉、干燥处,贮存期一年。
it was observed that the catalytic activity and the usable life of the treated niobic acid for synthesis of diethylene glycol dibenzoate was apparently higher than that of the untreated niobic acid.
用于催化酯化合成二甘醇二苯甲酸酯增塑剂 ,处理后固体铌酸的催化活性和重复使用寿命有明显提高。
this minimizes the number of small writes that are presented to the device, which in turn optimizes performance and helps extend the usable life of the drives.
这样能够减少设备的小型写操作的数量,从而优化了性能,并且有利于延长设备寿命。
this kind of strengthened wood composites improve the natural defects, expand the field of application and extend the usable life of poplar.