If either the number of sun or ring gear is not multiple of planet gear, system will run effectively, with lower impaction of tooth mesh in and out.

Japan If it is a lower baby tooth, throw it up onto the roof; and if it is an upper tooth, throw it underneath the 'en-no-shita' ( the lower portion below the floor of a Japanese house).

在日本，如果掉的是下牙，就扔到房顶上去；如果是上牙，就放在外廊地板下面。

Steel tooth bit can increase the bit's stability and lower the tooth impact load, and enhance its wear resistance.

钢齿牙轮钻头增强了工作的平稳性，降低了牙齿的冲击载荷，使牙轮钻头的耐磨性能得到提高；

The results show that in the case of the same cutting resistance, pick-shaped teeth enjoys advantages over knife-shaped teeth, as a result of it better combined performances, such as freedom of fragment, the lower tooth cost and wear-proof.

结果表明：在截割阻力相同的情况下，镐形齿具有不易被击碎、齿耗低、耐磨等优点，其综合性能优于刀形齿。

It is done so that the upper tooth grows healthy downwards, while the lower tooth upwards.

这样是为了让上牙向下长，下牙向上长。

In Japan, children throw a lower baby tooth up onto the roof so the next tooth grows healthily upwards;

在日本，孩子会把下齿的乳牙放到房顶上，这样的话下颗牙将会长得结结实实；

USA A child puts the baby tooth under his pillow before going to bed.

在美国，孩子们在睡觉前把掉了的牙放在枕头下面。

Mongolia In Mongolia, they put the baby tooth in the meat and feed it to the young dog.

在蒙古，人们把乳牙放在小狗的狗食中。

It's a baby tooth.

这是一颗乳牙。

I get the Goose Bumps whenever I hear her sing.

每次我听到她唱歌我就起鸡皮疙瘩。

Effect of sulphur on metabolism of molybdenum in little white mouse

硫酸盐对小白鼠钼代谢的影响

Effect of passive smoking on white mouse and later generation;

目的观察加味玉屏风散对被动吸烟大鼠肺组织损伤的影响。

Animal pathogenicity test showed it could cause white mouse and goldfish to death.

动物致病性试验表明，该菌对小白鼠和金鱼有较强的致病性，可引起其死亡。

Influence of Noise on Establishing the Conditioned Reflex of White Mouse

噪声对小白鼠条件反射建立的影响

The meadow mouse has slept in his snug gallery in the sod, the owl has sat in a hollow tree in the depth of the swamp, the rabbit, the squirrel, and the fox have all been housed.

在铺着草皮的地下，田鼠正在地洞里呼呼大睡，猫头鹰则在沼泽地深处的—棵空心树里蹲着，兔子、松鼠、狐狸都呆在家里。

Guan Zhichen, M.D., Professor of Peking University, Director of the Department of Urology, Chairman of Department of Surgery.

北京大学教授、博士生导师，主任医师，研究员泌尿外科研究所常务副所长。

Or our department chairman, Mr. Han. He's a grade higher than Mr. Chao, while Mr. Chao is a grade higher than Liu Tung-fang of the Foreign Languages Department.

就像系主任罢，我们的系主任韩先生比赵先生高一级，赵先生又比外语系的刘东方高一级。

Miss Sun asked the Foreign Languages Department Chairman Liu for permission to have the Section Four students practice writing sentences instead of compositions.

孙小姐征求了外国语文系刘主任的同意，不叫丁组的学生作文，只叫他们练习造句。

At the time the mechanics department chairman was my graduate advisor.

当时力学系的系主任是我在西安交大读研究生时候的导师。

If I had been a conscientious defender of truth, I suppose I could have gone to the department chairman and complained about the bias was resulting in my elevated grade.

如果我是真理的真正捍卫者，我想我可能要到系主任那里投诉造成我高分的性别偏见。

The Physics Department chairman, who had not brought his family with him, said that they would not even consider the resolution unless the school paid for the tutors' meals.

没带家眷的物理系主任说，除非学校不算导师的饭费，那还可以考虑。