The cutting tool material should therefore have high abrasion resistance to improve the effectivelife of the tool.
因此切削刀具材料应具有高耐磨性以提高刀具的有效寿命。
2
I've saved the best for last,. If you can keep an attitude of preparation you'll have the best chance of making effectivelife adjustments.
我把这条最好的建议留到最后说：如果你能保持这种时刻准备的态度你就很有可能做出有效的调整。
3
The silting from a river with heavy sediment lood seriously affects the discharge capacity and effectivelife of the head work of a detention basin for flood diversion.