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- Such early thinning reduces the supply of gibberellins by reducing the number of seeds per cluster of fruit. 这种早期疏果方式可减少每一花丛的种子数目，从而使赤霉素供应减少。
- Subjects in conditioning group were exposed to an octave band of noise(OBN) centered at 0.5kHz,95dB SPL,6 h per day for 10 days. 适应组先在实验室内暴露于强度为95 dB SPL(声压级);中心频率为0.;5 kHz的一个倍频程噪声;连续10 d;每天6 h;
- They were then exposed to 8 Hz or 16 Hz infrasound at 130 dB 2 h per day for 7 d. The mice were then sacrificed and the expression of SOD, GSH-Px and MDA in their brains was measured. 随后将各组小鼠置于8Hz或16 Hz,130 dB的次声环境中,每天持续2 h,7 d后处死小鼠,测定其脑组织巾SOD、GSH-Px及MDA的变化情况,并进行组间结果对比。
- B. H and height per year are over 2.5 cm and 1.3 m at abotit10-year-old, with the age of tree increasing 10 year, the D,B,H per year will diminish 0.3 cm,but the heightper year is still 1.0m. 通过1047株毛白杨优树生长量的分析，得出了选优的绝对值标准如下：10年生左右时，年均胸径生长量2.;5cm以上，年均树高1
- HAMMER's storage management limits it to 32768 volumes, 32768 clusters per volume, and 32768 16K filesystem buffers per cluster. HAMMER的存储管理限制了它只能达到32768卷，每卷32768个集群，每个集群32768个16K的文件系统缓冲器。
- The agency places about 2000 secretaries per annum. 该代理机构每年可为约2000名秘书安排工作。
- We quote this h article at $250 per M/T C&F. 我们报成本加运费价每吨250美圆。
- It travels thousands of miles per second. 它一秒钟能走几千英里。
- Can your car make a hundred miles per hour? 你的汽车一小时能开一百英里吗?
- These apples cost five yuan per kilogram. 这些苹果每公斤五元。
- We fail one student per year on average. 我们平均每年有一个学生不及格。
- The car is spinning along120 li per hour. 这车正以每小时120里的速度行进。
- The hurricane has a speed of 73 miles per hour. 飓风每小时73英里。
- Meals average out at 5 per head. 膳食平均每人5英镑。
- Pressure is force per unit area. 压力就是电单位面积上的力。
- The four and a half per cent bonds are in request. 利息四厘五的债券需求量大。
- Last year its retail price fell20 per cent. 去年，它的零售价格下降了百分之二十。
- A postman's wages are 180 per week. 邮递员的工资为每周180英镑。
- Per capita incomes rose sharply last year. 去岁人均收入剧增。
- The speed limit is 40 miles per hour. 规定的最高时速为40英里。
